This a bit of a long read and I apologize for not being much of a writer, but here's what I've found on my road to going mirrorless.

Due to complication from a medical condition, I was losing the feelings in my hands and started dropping things. I made the decision to sell my big cameras and lenses, but I didn't want to give up my photography. I sold my Canon 5D Mk III and my big lenses and started exploring other cameras.
I tried some bridge cameras and although they had many nice features, I missed some of the things they lacked.
I decided to explore mirrorless cameras. I've been a user of Canon cameras since my days in Viet Nam so I started with the Canon M3 with the add on electronic view finder. It wasn't for me - too clunky with the add on view finder and it either lacked many things I expected in an SLR. Shortly after I purchased the M3, the M5 came out. I t had a built in EVF and many of the missing features were included. Sold the M3 and bought the M5. I really liked the camera but even with an add on hand grip it was too small for my hands and a couple of the buttons were in the wrong places for me. I was always managing to hit the button to view pictures that were in memory, just as I was about to take a picture. Sold it and all the lenses and went to the Olympus OM-D E-M10 Mk II.
The Oly is a beautiful camera, a little complicated to use because of all the things it is capable of. Even with that it's worth the effort to learn its many menus. The picture quality is superb and the availability high quality lenses, or the availability to use adapters for lenses from other manufacturers made it a great choice. I love this camera, but then I saw the reviews for the Fujifilm X T2.
The Fuji is fantastic, all the major settings (ISO, shutter speed, apature, focus points, etc) are available without having to go to menus. It also has some buttons that can be programmed for special functions as the user desires. The EVF is super sharp and bright and the color of the final images are better than any other camera I've ever used. The auto-focus is unbelievavly fast. I purchased it with the hand grip/extra battery holder and the 18-55mm lens (like all midro 4/3 cameras its equivelent to 27-80mm). Using it is like going back to the earlier cameras like my AE-1, it's made photography fun again. I find I'm now shooting every day and the one lens along with some adapters is meeting all my needs. No more lugging around thirty pounds of extra equipment.
If there are any draw backs they are minor. There are very few accessories or lenses available at this time. You can buy an adapter that will allow you to use other Fuji 4/3 lenses on the micro 4/3 of the X t-2, so there is a work around, if you need it. The 50MByte raw files would be a limitaion for those with small hard drives, or limited computer memory. The price could also be considered a draw back.
It's time to sell the Oly and all the lenses and accessories, because I think I've found the perfect mirrorless camera for me.
If you're thinking about goint to a mirrorless camera the Fujfilm X T-2 is worth exploring.