While I agree with you and felt the same way as you, I found that it wasn't as big an issue once I bought a case for the phone. Once you put a case on the phone the camera bump completely disappears.

I dont know what percentage of iPhone users go case-less with their phones, but I haven't seen one being used without a case.. and I have been actively looking for them.

I say this as a person who used to go case-less with my iPhones until my iPhones started having camera bumps. Then I started to get a case to rid myself off the camera bump. Last year I got the leather case, and while I winced at the ridiculous price I paid for it, I have been extremely happy with the choice. The blend of steel, glass and leather feels and looks great.