People are being a bit cynical in the comments, so I’ll share my experience which is a bit different.

I felt an irrational fear when I checked the box to become an organ donor a few years ago.

I rationally knew it was the right thing to do, but it felt bad nonetheless. Nowadays I just no longer think about it.

So my guess is that many people are scared of it, but no one wants to admit that.

I will reply to your comment to generate a notification wishing you a fantastic day, internet stranger!