PC - often best versions of games, largest library by far, best communities
Nintendo - decent selection of franchises that can't be found anywhere else
PS - doesn't offer much, but still has some decent franchises and exclusives though that number is dwindling
Xbox - doesn't offer much, but personally I have also favoured their controllers
Mobile - the worst, its best games are shittier ports from other platforms, its own games are ad-infested micro-transaction mills.
https://www.youtube.com/watch?v=eDyXIXyAZq0
Please consider adopting a cat from your SPCA or local animal shelter.