Why do people give a fuck about the amount of sold MGSV copies?
Knowing that kind of fact doesn't make the game worse/better.
Back to OP: I need entertainment 24/7. I mean, what's wrong with that? Should I force myself to work in my spare time?
Only problem here might be the lack of diversity. But if you make sure you learn something once in a while, even that's okay I guess.
Just don't give up gaining knowledge.