Tbf mostly the general vibe and direction the whole industry took at the time. So i didnt want to be locked in a closed walled garden.

Eg giant day one patches, DLCs, MTX, paid online, shitty and slow servers, revoked digital licences(happened to me with Driver SF on the 360), shitty updates to the UI, intentional blocking of last-gen/unlicensed 3rd party peripherals, etc

tbf some aspects were 360 exclusive but the PS4 caught up on most shitty aspects. I liked the aspect of consoles where you just put in the game media and then you played. That was it. Consoles got more complicated with 7th gen while PC gaming got a lot easier with eg Steam at the same time.