Sometimes arguing isn't in the interest of merely giving an opinion.
I agree though, there is actually quite a bit of detailed information on this website. With a bit of weeding out some of the more interesting posts that are basically to keep you laughing, you can learn a good bit on this site from what I've seen.
Someone even mentioned it in the chatroom earlier, that they had actually learned a good bit here.
On the other side...
If you ask a question that everybody with internet can see, be ready to justify your question, and be ready to argue your reasoning for baring such a question.
Even if it's something as simple as, "what color is the sky", this is the world wide web, SOMEBODY will argue that it is actually baby blue and not the richer color that the simple word "blue" describes.