How come we can "Like" posts but not "Not Like" them?

I know I know... Not very important, but i'm bored here and just kinda thought... Well why can't we "Not Like" or "Dislike" posts here on stratics? I mean This is probly the wrong section to post this in to but it makes no sense to me why we can like a post but not "not like" a post. You can "UNLIKE" a post, but then why doesn't it keep track of who "unlikes" your post like it does with the people who like it? Makes no sense :-/

Always wondered that myself... Never know might be interesting ..... but then you'd have someone who WANTED to be the most disliked.

Don't we already have enough trolling here already w/o that option?

I already asked for this in the Suggestions forum but the staff feel that trolls may mi-use it. Can't imagine that happening myself.
I also asked for the ability to like my own posts but don't think that will be added either.

I dislike this post.

I can understand the nature behind the dislike, which bluntly, is quite rude, what if there was a STFU button, same thing? or a take your opinion elsewhere.
More correctly, you "disagree" with the Poster? any comment against usually just spurs them to make multiple more of the same, because Dislike = defend your statement and further explain it please.
If you don't like it, don't provoke them, stay silent, let it die on its own. be smarter than a button