Why are you so stupid?

Hey, anyone knows why most 4chan users are so damn stupid? I can't figure it out, I have been here for a long time and there have been really awesome discussion, but most of the time all I see is bland stupidity. I'm not even talking about /b/ stupidity, I mean the real, ignorant, retarded kind of stupidity.

This is a good question, I have wondered myself. My best guess is the average age of anonymous has decreased, since most of the time, the stupidity just screams "TEENAGERS" to me.