I’m planning to buy it, once it releases on PC.

I am a fan of the games though, and have been since the first one. GTA 5 had a great amount of replay value (a lot of my friends, and myself, have replayed it a few times).
If someone isn’t a fan of it, and they didn’t enjoy the story and such, then I can imagine it to be an easy pass. I’m looking forward to the madness of it lol.