Honestly I think it's all the hype, both from Apple and other online tech sites that make people want an iPhone. At first I was saying that I would never want to get an iPhone again, but then after constantly seeing and hearing about it, I almost made up my mind to get it when it comes out for Verizon. So today I went into the AT&T store to check out the iPhone 4, and I can say I remember why I got rid of it in the first place. The only thing that it really has going for me is the look, gestures, seamless integration with music, photos, and videos, and nice display. It seems smaller then I remember, but that's probably just because the rest of the smart phones have gotten larger. The unoriginal icons that have remained the same for the past 3+ years, limited customization, and overall the phone just feels dated.
If anyone is considering getting the iPhone 4 for Verizon, I highly recommend that you go to an AT&T store or test out a friends iPhone 4 before pre/ordering yours for Verizon.
I also saw the antenna issue first hand. When I first heard about it I thought it was just hype, and that all phones do it. I've noticed my phone may drop a bar or two if I hold it a certain way, but I knew that was just the orientation of the antenna in relation to the RF signal. The iPhone 4's problem is huge, if I held it with my right hand the signal would remain the same (3-4 bars), however I keep the phone in the same location and orientation but hold it with my left hand, and the signal quickly drops down to no service.