I think it will also keep away the type of people that like to go on mass downvote brigades. I never understood why people would look up and downvote every single post a single user made because of one stupid repost.
I guess people are just sort of vengeful, because they see something they don't like they wanna ruin a person's day. That's why the whole karma thing wasn't important to me, and part of why I only ever upvoted things I liked, rather than upvoting and downvoting. I just like seeing other people's content, maybe adding a comment here or there, but the vindictiveness of the people there wasn't something I really wanted to INVOLVE myself with, I preferred to just sit back and watch. I like to think of a particular quote, I think it was by Voltaire, "I may not like what you say, but I'll defend to the death your right to say it."