I went naked years ago after Apple was having problems with the iPhone 4. If you remember correctly the back glass could shatter if you had grit between the case and the phone. Apple even sent me a replacement case which later they admitting would still cause the problem.

Ever since I have gone caseless. I don't drop my phone, so that's not an issue. My screen isn't scratched because I don't leave anything in the pocket I keep it except the phone.

Your iPhone is not an investment as some claim, it's a piece of hardware that Apple wants you to replace every two years. Maybe thats why my iPhone SE 2020 battery is failing. You can replace the battery and allow it to be used a few more years, but then they don't support older phones with the current OS. So like it or not, eventually IOS will no longer work on your "investment" and you'll be upgrading just so you can use current apps. I'm sure the old phone looking clean, sparkly and useless will be a great investment to store in the chingas.