If iPhone never existed, I probably would have no problem going back to Nokia. They may not be popular in the U.S. like they are outside of it, but Nokia just seems like a solid brand even if many of their phones aren't as aesthetically pleasing. For me, reliability > design. A pretty phone is a paperweight if it isn't reliable or practical enough. Luckily, iPhone 4 covers it all. It is my #1 fav phone ever, but who knows after a few years? I used to say my Sanyo and N82 would always be my favorites at the time they were my main phone, but they eventually got surpassed. The collection keeps growing.
I remember when I was using my N82 & iPhone 2G, I would talk to my gf normally for 5 hours. The iPhone 2G had twice the talktime on 2G, but would get hot and start to echo after 5 hours. My N82 maintained its clarity as my gf told me. Just dependable as a phone. There were trade-offs. Of course after 2 years, the batt life on the N82 got much worse and the indicator was never accurate. It would show full battery after a full charge and then the low batt warning sign out of the blue and within a day. The iPhone 2G still maintained a 80% charge, but it also crashed alot more.
I do miss those Nokia phones though. Had to sell them. And I wished Sanyo (Japanese) didn't just make CDMA phones. I know Japan is CDMA-dominated, but I would love to back a Japanese company like them considering Sony tends to let me down alot as of late. And this decade (2010-2019), iPhone 4 was my first for it and my 11th phone overall. Matched my pre-order #. Call me a cell phone enthusiast, but I may just plan to keep all my future phones since they are all pocketable PCs in our hands now. I will probably get fewer phones in this decade, but would like to go for top quality.
By 2015, I want to own a phone for all the top 4 major smartphone OSes - iOS, Android, WP7, & BlackBerry. 1 down, three more to go! Then by 2016, go back to iOS with the iPhone X. I can always experience some new and revamped iOS' goodness with an iPod touch anyway. What I like about Android and WP7 is they can offer more variety in form factors and design.