It makes sense to me, due to the nature of Nostr, that people should have two or three Nostr IDs.
With one, you should have the freedom to say whatever is on your mind in the presence of contacts you don't know in real life -- but that one should be an anonymous ID. It can be reserved for potentially controversial posts that could be used against you, like those that express certain political, pharmaceutical, or religious views.
Another ID might be a more measured, professional one, a public face of sorts, where you are well "behaved" and won't get in much trouble with the thought police.
Thirdly, one could have a personal ID for contacts you know in real life. (Better yet, don't be on social media with your real-life friends -- actually be with them! Or send personalized direct messages through Signal.)
All the while, in any case, it's important to keep in mind that whatever you say will likely stay on your "permanent record."
You don't want to post stupid things in your 20s, for example, and have it haunt you in your 40s.