This issue comes down to if you want to buy a bumper or case for your iPhone 4. If you are willing to, then GREAT. You will be enjoying the hell out of your iPhone 4.
If you don't want to buy a case or bumper because you'd rather have a "naked and pretty" phone that has reception issues and in turn allows you to continue to whine and bitch about it, then by all means do that. Go ahead and whine and bitch until you're blue in the face. Then when the return window is about to pass by, GO RETURN IT! Move on with your lives. Sad lives, but lives none the less.
People like this is why steve jobs thinks he is gonna get away with this. He is not.