There's this thing called playing a game not for entertainment, there's games that are addictive and games that will have you spend hours just to get a little taste of goodness to keep you going.
I'm happy for you you haven't wanted to enjoy a game that is like this, and that you don't think about leaving criticism where it is due.
I've definitely played my share of games for thousands of hours including MMOs, But just because I'm tired of the game loop and it doesn't interest me anymore I'm not going to leave a bagy review.
Let me tell you about Clicker Heroes. I've posted a negative review with 1200 hours in game and it took me 200 more to finally get rid of it and uninstall.
I'm so very glad it couldn't hold my attention forever.