Ok, I'm a videographer primarily and have a Canon cinema camera for paid work. But I also like to have a decent stills camera for photographs of family events. I've had a full frame Canon 5D Mark IV for quite a while for this, but I've increasingly found myself leaving it at home because the big lenses were a chore to carry around. And if you ever take out a big white 70-200mm full frame lens in public places, people freak out / call security!! It generally sucks the life out photography. And don't talk to me about camera shake! So for the last few weeks I've been playing with a Micro 4/3rds Panasonic GH5s (for low light video work), and a Panasonic G9 (with amazing image stabilisation) for stills... and the weight saving has been huge. The little M43 lenses get far less attention, and what's more the image quality is very very good (not quite as good as the Canon, but much closer than I imagined it would've been), and being mirrorless you can monitor your exposure in the viewfinder... which means faster shooting, less mistakes, and less post processing. I took the Panasonic system to a family event last week, and got shots that to me look every bit as good as my 5D. So I think I'm just about done with full frame. Even if I was a giant with big muscles, I'd still prefer not to freak people out with a big lens.