Sure mate. It's not the money really, its just the concept of the games. I've never been a massive, massive gamer in terms of loads of games, always been pretty 'mainstream' and playing realistic games ie FIFA, COD, GTA, racing games etc, I've never managed to get into games which were a fantasy / magical type game really. My mates have always been the same also, so we all predominately play COD.
Back in high school / college we'd play hours every night and every weekend, but now its hard because of work, girlfriends, family commitments etc so we only get to play a couple times a week altogether now, so a game like COD which we all enjoy and have played for years is easy to pick up and play, rather than grinding on a game like Fallout, Destiny etc which can be a bit more time consuming.
Hope that made sense