Because when your standard of "truth" is how many people thumbs you can get, that's a problem. Except on SF, of course. As with many things, it wouldn't bug me so much if people understood the nature of wikipedia and used/treated it accordingly. But they don't, so get the fuck off my lawn.
I had a birthday a few weeks ago and it put me into condition of happiness, no two ways about it. I enjoyed the well wishes from friends and appreciated that a bunch of people got together and ate dinner with me.