De-friending someone of FB: WTF is the point?

Ambi-In list form
Been “defriended”-Someone I romantically pursued too agressively (she lives in Sin City, so it’s moot)
“Defriended”-People I only know as Dopers, members of group on Facebook when I wasn’t allowed to “friend” whole group.
“Defriended” AND “blocked”-Mom, due to talking about me behind my back, someone who was creepy in her romantic pursuit of me (karma w/#1)
“Unsubscribed”-People who are agressively rightwing.