Glad you asked. I've been with 1st Gen since day One. I live in San Diego and the EDGE connection is very good. Calls are great, connectivity is great. I use WiFi where ever I can, just like anyone. Here is my main reason for not jumping on the 3G or 3GS train just yet:
My AT&T wireless bill would go up $15.00 per month - data costs from EDGE to 3G would go up 10, and I'd have to pay 5 bucks for 200 texts, where now my texts are included.
What am I missing by NOT going 3GS, especially since I qualify for the best pricing now that my contract is nearly up?
Improved Performance (I'm happy with my current performance - it would have to be a MAJOR performance improvement to justify)
Built In Video Camera w/Editing (Nice, but I don't care)
3 Megapixel Camera (up from 2 - I have a nicer camera anyway)
Voice Control (My car dials numbers for me, for the rest, I have fingers)
Compass (A fascinating and somewhat useful ability, not a deal breaker)
16GB of space (I haven't even used up my current 8GB - I rotate play lists)
Color Choice of White (meh)
What do I GET on my 1st Gen iPhone come next week?
Cut, Copy, Paste / Spotlight / Landscape Keyboard / Voice Memos
Of course, for anyone who has been sitting on the fence for two years, now would be a wonderful time to jump into the iPhone pool. For me, let's see what next years' model will bring.