I found a way to enjoy the N900 week too. While I've never let go of the N900 as my personal portable computer wherever I go, I barely used it as main phone.

(My voice sim didn't have data on it until recently, and the N900 would be wasted without connectivity, so I used a dumber phone along with the N900 at all times)

Now I just put my voice SIM in the N900 and I'll use it as my only device!