I had bought a Panasonic mirrorless 4+ years ago, and it really sucked. Focusing was slow, the image quality wasn't any better than my original XTi, and no viewfinder. Fast forward 4 years, the technology (as a humble consumer) has matured for mirrorless, where the quality of the bodies & lenses now rival the DSLR world. And for the average consumer, who wants to take a better picture than on their phone, mirrorless is positioned to take much of the market, without having to buy into the bulk of a DSLR.

I have a fairly extensive Canon system, but find that the Sony A6000 is perfect as a travel camera, whether used with Sony or Canon (or vintage) lenses. For my crappy eyes, I like the EVF viewfinder, especially when using my Takumar 55 lens. I do wish my Canon bodies had the ability to zoom to focus in the viewfinder and unless Canon comes out with a hybrid viewfinder in the next iteration of the 6D, I am more likely to switch to Sony (with IBIS). But speaking as a consumer with worsening medical issues, I have to think about my future and my ability to take good photos.