It helps resale value, but more importantly, it protects you from rubbing your fingers on a scratch in the glass (nothing dangerous, just irritating) or having

It helps resale value, but more importantly, it protects you from rubbing your fingers on a scratch in the glass (nothing dangerous, just irritating) or having an unusable part. Like the plastic covering the rear camera lens. I got a case for my 4S ($10 on amazon, almost unnoticeably thin) because my 4's camera became increasingly unusable over the course of a year and change since I kept putting it down on tables, while the rest of the iPhone was in good shape for being naked (even considering I drop it at least once a week). I probably noticed the first scratch on the plastic lens cover bit a month into owning the 4, while right now there are no noticeable scratches on my 4S's which was purchased in mid-October. Compare http://twitpic.com/6n1o1b http://twitpic.com/6n1o1b and http://twitpic.com/6ubjq2 http://twitpic.com/6ubjq2 (can't even really see faces anymore, and that was with an attempt to focus and decent lighting) to http://pic.twitter.com/gHK0yi5g http://pic.twitter.com/gHK0yi5g or http://pic.twitter.com/7U1lNoA9 http://pic.twitter.com/7U1lNoA9 (where you see a little too much detail ;) ).