Most Helpful Guy
Never been on the receiving end of a bad breakup, I take it.
Sometimes, when someone's hurt you very badly, it's easier to move on if you remove them from your life.
Most Helpful Girl
I did it because I didn't want to have anything to do with my ex. I still don't. When I asked for space after we broke up, the very next day he texted me. I blocked his phone number and then waited a little while and then deleted it. I sort of despise my ex so I didn't want to see his face on FB. I left him as my FB friend for less than a week, but then he changed his profile picture and it showed up on my news feed and I couldn't handle it, so I just deleted him. I found it a little funny that he changed his picture just a couple days after we broke up too...
That's my reason for doing it. For others it could be because it's too painful for them since they might be the dumpee and not the dumper. They might still have feelings for said ex and they can't handle seeing them move on without them in their lives.