If you love multi then you want to play multi every game you play. It is what you love about gaming. The game becomes more alive and more real to you. You travel and spend time with friends and share something that you all enjoy.
If you like single, then that is what you want to play. You like being in control yourself and not having to share those times with others. It is just a different world that you can be anything you want without having to worry about what others might think. You get all the glory.
It all depends on what you are looking to get out of the game.