Pretty much all the reasons I can't stand most 3D Printing communities on the internet. Too much basic troubleshooting answered dozens of times already and not enough cool projects.
I bitched at someone on reddit about that once... Asked a similar common question and so I asked them if they even bothered LOOKING at the sub before they posted because that exact question had already been asked three times that day! There's being lazy, and then there's crap like this.