Well, I beat Brothers, so I guess I'm a masochist, yeah.
But seriously, bad games and games you dislike are really good learning opportunities. By playing games you don't like, you can examine what that says about your tastes and biases. By examining games that you believe are poorly made (or at least flawed), you can learn a lot of lessons about game design that will help you both expand your tastes and narrow down what you like and dislike about elements of games.
And if you are a game developer, it's a great way of learning about the pros and cons of all sorts of elements in a game. Every game can be dissected down into smaller elements and examined and I'd argue that you learn just as much playing the bad games as the good games.