I see delete as vital for privacy and to prevent major foot guns. I am extremely cautious when posting images for example. Most of the time, I just CTRL+V it and after a few seconds, I see a link to a hosted image in my client.

Did I accidentally upload an image that I didn't want to share? What would I do if I did?

Another fear I have when using nostr is to copy paste the wrong piece of text, for example a password or something similar, and hitring enter accidentally without checking the post again.

These things can happen and the fact that you can't delete a mistake is terrifying. Posting on nostr often feels dangerous to me.