I wanted it for the 1080i capability and also cuz I wanted a good widescreen NOW instead of waiting two years for something else to come out.
I personally don't think that 1080p will be much better than 1080i, particularly on a good 1080p set, but that's just me.
If you already have an HDTV that you are happy with, then now isn't a good time to buy, but for me, I'm still using a 9+ year old mits 35" TV and I'm ready for a change.