Are these people honestly happy for people to say the same to them? Um, doubt it. Personally I like to move through life effecting positive changes. I'd prefer to compliment someone, and normally you don't have to look too hard to find something nice to say. A deftly served compliment is the simplest way to give someone a boost.
Of course now that I'm more mature and wouldn't be quite so devastated by a negative comment it rarely happens, but next time it does I'm going to raise an eyebrow (probably my left, I can't seem to get the right one to move independently) and in a puzzled tone enquire "Why would you say that?"