Saying you shouldn't doesn't work, because you do need to use a screen protector. The fact your previous phone, which had completely different glass composition didn't scratch doesn't work either. That analogy is kind of like saying, why should I need automobile insurance when I've never had a car accident. My iPhone 6 by the way, scratched like crazy and was the ONLY phone I never put a screen protector on. Every phone since has had one on it before they were even turned on.
iPhone 11 was the first of the phones with a new glass material. Before iPhone 11, there were threads virtually daily of people upset because their phone fell only a short distance, yet the glass shattered. Since iPhone 11, those threads are pretty much non-existent. I'm willing to bet the large numbers of people who shelled out big bucks to get a new screen would not agree with you.
Your assertion that a screen protector alters the experience also doesn't quite add up. Touch on my iPhone 12 Pro Max with the Apple installed Belkin protector is a flawless experience. It doesn't feel any different than touching the phone without a screen protector. A good quality screen protector also seems to reduce the level of finger prints.
Read through the thread and you'll see ALL the premium phone manufacturers changed the glass formula to be less prone to shattering, which equates to a bit easier to scratch.