Do you bother to answer questions where the user didn't even say thank you?

If I ask a question, I will either say thank you personally, or score a point to that user that answered. (As I figure people have better things to do than answer my bullshit all day). So in appreciation I will do that or comment on what they said, and as I mentioned earlier award them a point of thanks. Unless the answer really sucks.

I have noticed some users ask a question and not one person on the thread got a point? Or a mention. My feeling is why bother? So I wont! It’s a bit like hey answer my question OK??? and no thanks to you!