I'm firmly (and I mean FIRMLY) against the idea of restricting edits or deletion. Sure, taking back something you previously said is alright but if you have a lot of takes in the past that you don't want to keep online, you're going to look really bad. 

Plus, it's a major privacy concern. I've made posts in the past that were before I learned the importance of privacy. If I couldn't delete them, I'd be keeping myself open to doxxing, not to mention potential embarrassment. Some posts people make can also damage their reputation. If they made a comment that was written in frustration (or even under the effects of exhaustion or alcohol), their entire reputation could be irreparably damaged if edits and deletion didn't exist. I mean, we see how easily people get canceled for comments they made years ago and forgot about, and society today tends to not accept apologies even when they're legitimate and genuine.

So yeah, no edits/deletion = no use for me. I like Nostr but if a basic function of user control and privacy isn't possible, I will not use it. It's objectively a bad thing and that's a Nostr hill I will die on.