On the flip side... if everyone in this world is an idiot (except me, of course) then how the hell can I expect them to take care of themselves? This is usually the case with children (after all, we have to save them from themselves) but it doesn't take a genius to realize that being 18 years old doesn't actually prove anything about a person's ability to be a functioning citizen and member of society, especially in this day and age when (in the First World, at least) making it to your 18th tells us almost nothing about your Darwinian survival potential (but virtually guaruntee's your gene's will survive... damn).
What's my point? I don't really have one, actually. I'm sure Suck said it better at some point. I miss Suck.