I don't think 8 is a lot, or even 20, but I also don't think it matters what the number of blocked people is. I don't think there is some minimally acceptable number of people that one can block. I'm also in my 40s now so it stands to reason that I've come across more people in my lifetime who had issues.

I've also had an issue with someone in my husband's family who refused my friend request. Then later, sent me various friend requests from other profiles so she could spy on me, I suppose out of curiosity. I figured out it was her. Just weird and messed up. If someone doesn't want to be my friend, they have no business spying on me or looking at my profile for any reason.