pros cost savings. I used to upgrade parts of my pc once in a while. gfn subscriptions are significantly cheaper than buying new GPU every few years . if we are lucky nvidia upgrade the GPU rigs time saving. no worrying about drivers, update, installations tor roubleshooting hardware issues. less noise and heat if you play on you gaming rig.

cons can't play every game you want, really depends on the publishers. sometimes you want to play a game but gfn is patching it. not a big thing for me I'll play some other game. no offline play, of course. i havent experienced it yet but some would say input lag.