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My first expensive enthusiast camera was mirrorless.
I got a bunch of adapters and a bunch of funky glass and played with it for a year or two until I got my first native lens.
That's when I realized just how ass non native glass was. Don't get me wrong, its fun but if you want a seamless experience, adapted glass isn't up to the task.
After that I just went back to DSLR's because their native glass is both good and cheap, and works just as well or better than the mirrorless stuff.
Moral of the story, let native stay native.