Yeah, if you “forget” about it now, there’s something pretty big happening in your life (or maybe the world). Though, I don’t think there’s anything wrong with taking a break every now and then, if you want.
I don’t buy anything I don’t want to play right now (or after the current game, and it’s on sale right now), so don’t have the backlog issue, but I need closure. I can’t leave my games unfinished. I can drop a game if I want, but I need to mentally “finish” it. Either by completing it or by dropping it.