Just a little food for thought

Looking completely dispassionately which is better photographically – for image quality?

First the significant differences (Comparing APS-C and full frame only):

DSLR bodies are bigger and heavier than mirrorless bodies.
DSLRs take many more photos per battery charge than mirrorless
DSLRs have mirrors :)
Mirrorless don’t have mirrors :) :)
Mmmm – can’t think of any other significant differences.

Second important similarities:

Both have sensors
Both have viewfinders
Both have LCDs
Both have lenses
Mmmm – can’t think of any other important similarities.

So how does any of this make a mirrorless better than a DSLR?? Well IMHO it doesn’t, it can’t and it won’t as far as image quality of photographs is concerned. Excluding the photographers skill levels and the many personal preferences involved, the image quality of a photograph is directly proportional to the quality of the lens and the sensor.
Mirrorless do not have better sensors than DSLRs. Mirrorless do not have better lenses than DSLRs. So photographs from mirrrorless cannot have better image quality than those from DSLRs.

What most of us would like to know is… if there are no real significant differences between DSLR and mirrorless, then why does it seem like there is a big hoo-hah about mirrorless? All these "banner headlines" touting about how we should dump our DSLR and go mirrorless. Nikon and Canon and Sony and everybody will stop production on DSLRs (rumor, of course) and concentrate on mirrorless. If there is no difference, then… why?

Is it possible to look at a photograph and be to tell which type of camera the photograph was taken with? No, of course not.

None of my (five) mirrorless cameras has cost thousands.
They have multiple advantages for me over my DSLRs (also five) most of which have been mentioned in this thread already but to summarise:

The short registration greatly increases flexibility with lenses,
An EVF allows framing when the light levels are too low for a OVF (macro & DOF preview have issues on DSLRs)
If desired a shutter speed average view can be seen in the viewfinder (I've hardly ever tried this)
Instant review can be carried out without taking the camera from your eye
White balance can be shown in the viewfinder
Ditto for Focus peaking, histograms, magnified views, over exposure warnings....

Does having a car with Lane Assist make one a better driver? No. Probably the opposite as you form the habit of depending on it more and more. Does it prevent you from getting injured or killed in an accident? Quite possibly, it might. Does having a car that can parallel park itself make you a better driver? No, it does not. Does it mean that you might sometimes be able to park closer to the door of your favorite restaurant if you stink at parallel parking? Quite possibly so.

There is nothing necessarily inherently wrong with parallel parking assistance. Lane assist, on the other hand, certainly has the possibility of making you a worse driver than you already are as you become more dependent on it and even less attentive.

I don't care any more about whether you buy a mirrorless camera than I do about whether you buy a car with lane assist or automatic parking. I just don't need any of the three right now, and I get very tired of being told that I do, and, oh, by the way, that I need to pay extra for them.

That's the crux of the argument. If you don't think it's valid, just look down (or up) and check out what page we are on.

I'm asking people to buy what they want, but get clue and leave the rest of us alone. You don't need me to validate your choice, and I really don't need you pestering me about it.

I never tell anyone what they should buy...just what to think about to help them choose. Stop trying to tell me.