Its rare that I short anything. When I have, I've done ok with it. But, since it takes several days, at least, for me to be in the money, then cover, I don't much care for the stress of going to bed at night knowing that every day I don't sell is costing me any little profit I might make.
Shorting is almost pure gambling for anyone who doesn't have millions invested in technology, equipment and locations necessary to do it correctly. Well, the odds are slightly better than Vegas, so what the heck, every now and again, I'll do it just for some added stress.