Rant on a Pet-Peeve

Why is it that people who argue ignorant points of view in a forum thread insist on ending their argument with the statement "nuff said"?  For one, "nuff" is not a word, or even part of a word.  Using it makes you seem even more ignorant than the ludicrous point you are trying to drive home.  Even properly saying "enough said"  is stupid.  Just because you think your point is the end all, be all of an argument doesn't make it so.  What if another poster has information that you don't, and if you had said information, you would change your point of view?  What if someone agrees with you and could make an intelligent, well written post in support of your claims?  Well now they can't, because you already said "Nuff."  How about instead, you formulate your opinion and place it in coherent sentences, and invite someone to have an intelligent discussion or debate about a topic?   Don't take it personally when someone disagrees with you.  The world would be boring if we all thought the same way.  You may learn something and you may not, but at least you have had a conversation with a stranger and not come off as a douche bag.  And, for gods sakes, if you can't spell or use proper grammar, write your post in Microsoft Word, utilize the spelling and grammar tools and cut and paste it where you want to post it!