You bother because you are attempting to convince yourself that your belief is actually reality in spite of having no solid evidence to support or even suggest it.<quoted text>
"Second, isn't it funny that we are compelled to correct clueless hacks who don't have a clue about the merest detail on which they write?"
Yes it is! Why do we bother?
I bother because it's good brain exercise and actually allows me to show off the cool things I have been learning. Not to mention, it's fun knowing that I know more about the universe than you do.