Base iso noise is what led me to sell my Pen F. Cute, quirky and fun over contrasty B&W but beyond that? Besides social media sized files, it was nothing but an experiment. Lensbaby use turned out to be a longer lasting niche for me on FF than shooting anything at all with m43. Oh and that Oly menu system, geezus. Even Canon P&S menu structure blows it away. Never anything smaller than 1.6 for me any longer.
I've enjoyed shooting different size formats, myself, and think about my cameras similarly, i.e., they have to be fun, and some are more like experiments. I started shooting film during the pandemic and am currently doing Instax Wide (basically medium format film, as far as the size of the frame), 35mm half frames (film, again) with a Canon Demi, and full frame digital on my 5D (vintage m42 lenses) and RP (adapted EOS lenses). Switching things up is keeping me amused.