You can never have too many games.
I went though a time where I bought a heck of a lot of games. So many that I wasn't finishing them. I built up quite a pile of shame (unfinished games) so i decided to stop buying new games until I finished most of my old ones. This worked for a little while but then there will always be new games to buy, so now i'm slowly ticking off the titles in my pile of shame when there isn't a new title that interests me.
I went a bit off topic there ... oh well