I've tried since I didn't want to accept their escape hatch when GDPR came and thus couldn't use their services anyway. Unfortunately they apparently drag out the deletion process so I haven't successfully deleted it as of yet.

It's actually worked out quite OK, I'm relying on a few friends updating me on what happens in some group chats right now but a lot of friends has already moved over to alternative chat platforms like Telegram, Signal, etc.

I haven't missed other parts of facebook like groups and events at all which is nice and I've never used IG or WhatsApp.