It could be your memory card size, or your camera buffer size, or some mechanical flaw. Have you dropped the camera? More than likely it is a memory / buffer limitation. The more color, detail, objects, etc, in a scene, the more memory, and buffer space it will take. Some cameras can store more images before slowing down / stopping, in Continuous mode than can others.
What you don't understand is that photography is about PERSONAL EXPRESSION....so do what pleases you, and let others do what pleases them. It is nothing to have a cow over. Freud would call you "Anal." Get a life already.
Falls are your fault, too. Each insurance company has it's own limits / standards for how much they will pay out before dropping you. Learn how to stand, sit, walk, run, etc, without falling so often. I have been around the world, through: landslides, earthquakes, blizzards, hurricanes, tsunamis, floods, flash floods, and coups, and only fallen twice in 45 years. Wear hiking / other boots appropriate to your tasks, use neckstraps / tripods more, take Tumbling / Judo lessons so you know how to fall without harming yourself, or your gear (duck, tuck, and roll a lot, slap the ground with your free hand as you land, etc), use drugs / booze less, ride in stable vehicles (boats, trucks, etc,) when possible, and remember that you are not on the team, so you need not jump to get the ball in the basket, slide into home plate, etc, to get great sports shots.
Wait a year, or two, and get the A9RIIS3, or whatever....same cost, more features, and less Buyer's Remorse.
Mirrorless is not an upgrade. It is a sidegrade. It has benefits, and detriments; like all other systems. If you prefer the benefits, and can accept the detriments, go with it. Otherwise, do not. Mirrorless can be smaller, lighterweight, and easier to carry, which will also produce more DOF; due to the smaller sensor...making for less Bokeh. A FF mirrorless will not have so much Bokeh loss, but will be as big, heavy, etc, as an SLR. If you do mostly landscapes, get a small mirrorless...a "One Inch", or a "Micro Four Thirds", or whatever, system. If you shoot mostly portraits, get a Full Frame camera...DSLR, or Mirrorless, as you prefer. Just because manufacturers hawk some new gizmo, or Fan Boys tout it, does not make it better than what you already have.
Buy a new camera...and a neck strap. Insurance does not cover negligence on your part...which dropping the camera is.
For public things in public places, no permit is needed. If your jurisdiction requires such a permit, they are violating Constitutional rights. For private property / events, you are S.O.L. Such is life. Live it, or don't.
Many. Be sure to check the sizes. Some airlines have stricter size limitations than do others. If your bag is half an inch too wide, or an inch too tall, or such, you may have to check it rather than carry it on. For carry on, I prefer a soft sided bag, which can deform a bit to fit. I also like to get a small to medium sized bag, and carry less gear. Billingham in England makes some great bags, which are mostly of the briefcase, belt holster, or backpack, styles. Wearing the things on a belt, or over a shoulder, works better than pulling them behind me. The last wheeled pull bag I bought from someone else ended up with a broken handle, and wheel, after the first airport it went through. It is also easier for thieves to grab a bag which is pulled behind you, and run with it, than it is for them to do so with a bag hung over your shoulder, or worn on your hip. Are you going to carry a Point & Shoot camera, with some spare AA batteries, or a full frame camera with four lenses, and a flash, or what? Figure that out, and then shop for a bag which can carry the load while fitting the size limits of the airlines you will fly. Billingham bags cost a bit, but are worth it, being hand made to quality standards.
When properly held, with your legs properly set, the monopod plus your legs becomes a tripod, so keep the VR off.
Generally, it costs less to buy a new lens than to get rid of fungus in a lens you have.
For wildlife, forget camera lenses altogether. Buy a good telescope, and a T-Mount to fit your camera to it.
Editing is not only post capture. You edit in your mind as you compose an image you have not yet shot. Pre production editing-composing-IS editing. Editing what does not yet exist is called "imagining." It is also called "Pre-Production Editing", and "Composing." You couldn't make photos without it.
Do what suits you. Many pros do it all-compose, crop, etc-in camera. Some don't. Do what suits you / your style, and don't worry about what others do / don't do. Ansel Adams never worried about how Matthew Brady would have shot something. Adams pleased himself.
Nikon plays the Japanese game of "slow, slow, fast, fast." They go slow in making changes, finally make them, and them quickly implement the changes they have made. They may not be the first to do something, but they get there in the end, and do so in a way which keeps them in business and making a profit.
Back in the late 1970s-I think it was...perhaps the early 1980s-Canon changed it's mount, and pizzed off many old timers, who swore off Canon for life, as they were unable to use their large collection of older lenses on the newer Canon cameras. They figured that since they had to buy all new lenses for the new cameras, they may as well buy a new brand, and so went to Pentax, Nikon, etc. Newbies without such large lens collections loved the changes, and bought plenty of Canons, so Canon survived. Nikon makes more than just cameras, and lenses, and so can remain in business even if it totally stops making lenses / cameras. Kodak's demise was rumored for more than a decade before it happened. What finally killed Kodak was not the decline in it's camera / film sales. It was a law suit Polaroid brought, and won, because Kodak violated Polaroid's patents on it's instant print film system. Kodak's instant print system was heavily invested in by Kodak...and then killed off by court order. Kodak could not survive that in addition to the decline in film / film camera sales. Nikon could make a Kodak like blunder, and be out of business in a week...or it could limp along for decades, rising, and falling, and rising again-ala Apple-and anyone who thinks they know for certain which it will do is fooling him / her self.