How's it going to be?

When you walk past someone and they say "How's it going?" Do you they really care how you are doing or are they just saying it to be nice. I make the point b/c people usually don't even wait for a response. I guess it is better then saying nothing but it's still funny.

This is the typical "How's it going" walk by:

Ryan: How's it going?
Anonymous Person: Good.....and you?
Ryan: Great

That's not a very meaningful conversation. If I would have said......I'm having a shitty day then they would have just kept walking. It begs to question. Does the person on the other end of the how's it going really care. Sorry to burst your bubble but I would say there is a high percentage that don't :(