I'm Addicted to the Dorm Kitchen Sink...

So here's this thing I've been doing since starting college a few months ago. Every night before bed, I sneak into the kitchen and clean the sink like it's my full-time job... It started out as just wanting everything tidy for myself but now? It feels like a late-night ritual or something. My roommate thinks I'm nuts (she caught me at it once) but she says not to tell anyone because she likes how sparkling fresh her cups are in the morning... Anyone else have weird cleaning habits they can't explain? Ellipses and all...