While the iP4 and beyond are a tad on the uncomfortable side to hold when I'm in bed laying on my back in certain situations, I prefer this design for when I'm making calls, especially in the heat of the summer. With the 3G and 3Gs I found I would hold the phone closer to my palm and if it's really hot outside, sometimes I would come away with a nasty plastic back. With this newer design I generally hold the phone just with the tips of my fingers, leaving a big airflow gap between my palm and the phone.
Sounds gross, I know, and no I'm not overweight, but I do sweat easily (Iraq sucked!) so this is actually a welcome change for me.
Iraq sucked a lot more for the local Iraqis who had to deal with the likes of YOU.