I'm carrying my 13 Pro without a case, to see it's Alpine Green glory and feel the matte finish on the back. It's been perfectly fine for the last almost 4 years, some minor scratches on the steel edges I fixed with a sandpaper, there is one recent scratch on the screen and that's all. Otherwise it looks good, just a bit used. Has fallen multiple times from pocket when sitting, and a dozen times from tables, few times onto pavement (that's what needed sanding).

Almost every single one "case" for iPhone is a waste. Waste of material, waste of space, waste of your money, waste of user experience. You've already paid for a perfectly good phone, and then slapped some $[1]0.99 case on it to gain nothing but pain and vanity.

I only had one case on a phone, that made it better - original wooden case for 1+3T. Been looking for same experience on iPhone, but it's not possible due to shape -- they are all bulky. The closest thing is carbon-fiber cases, and I had one, which saved this iPhone when I dropped it onto slanted pavement, where it slid for a few meters screen down, ruining the case, but saving the screen.

Would I drop it if I wasn't using a case, that has parts sticking out, making the phone more cumbersome to use and carry? Unlikely, because it happened in the first year owning it, and I've been going caseless since then and nothing similar happened.