Haha same can be said for me.
This thing has me hooked...I couldn't say the same about my iPhone.
Perhaps it's because it just "ties in" better with what I normally use in the course of my daily work day. I use MS products all day (Office, etc) and game via an Xbox 360. The WP platform compliments and expands on these aspects perfectly.
And the games...they truly feel like Xbox quality games (for the most part). Yeah, the iOS has tons and tons of games and apps, but to be truthful the majority of them feel like an amateur's first attempt.