You really made the right decision. I think I used my notebook today for the first time for any length of time - to update iOS 4 on my iPhone!
It is effectively an external hard drive that happens to conveniently have the ability to:
1) run iTunes
2) stream video
3) download and store podcasts and videos
You'll be happy that you have two when:
1) you don't want to necessarily share email with the kids/girl
2) you want to game together