Is it? People talk about lots of social, political, economic and spiritual topics on here. Most folks respond either because they're bored out of their minds, enjoy debates, or have strong opinions, so my motives are easily guessed. (I'm bored.) People selecting the topics, on the other hand, tend to be slightly less predictable--barring the ones who just wanna start a fight.
I find your question amusing though, because seven hours ago, you apparently wanted details about the OP yourself.