But but if you have a decent hand you don't let yourself be bluffed! Like the rest of the time!

So what you're saying is that it's worthless for someone who will almost certainly lose against the short-stacked player to knock the other player out of the hand.

I can see some logic in that, but I can't see how it's in the (evil, manipulative, selfish) spirit of poker. As far as I've always played it, the side pot is like another hand - you try to win in the same way.