I've never owned a cellphone of any sort. I wouldn't mind having the GPS stuff but I guess it's not necessary because I've been in some rather remote places and I've always found my way back
When I'm not at home I'm away from my computer so carrying around a mobile web browsing device kinda defeats the purpose of getting out of the house. I also don't like getting calls at home so getting them when I'm outside just seems annoying.
I still might get a Lumia of some sort if the successor to the 920 turns out to be amazing and the cellphone provider situation in Canada becomes more tolerable.