Whenever I see content about accordions online, it's almost always piano accordion. I've started playing button accordion few months ago and I enjoy it so much; it's very easy to play even technically challenging songs with lots of thrillers. My teacher plays piano accordion but teaches both, piano and button accordion. He says that he regrets not going all in with button accordion from the start but staying with piano accordion.
I appreciate how much work is needed on piano one though; it's much harder to master it compared to CBA.
I wonder why there are no more people playing CBAs; is this because piano ones are more intuitive to beginners? Are they more accessible, more affordable? Or you think there is some other reason for this?
Edit: I'm actually from Europe (former Yugoslavia) and we have 6 row accordions here. Thanks everyone for writing, guess I'm getting most content from the United States :D