A line from the movie O Brother, Where Art Thou said by Ulysses Everett McGill,
"Pete, the personal rancor reflected in that remark I don't intend to dignify with comment. However, I would like to address your general attitude of negativity. Consider the lilies o' the goddamn field or... hell! Take Delmar here as your paradigm of hope."
....people just don't like negativity. It's not in our nature to like it. So, no, we don't have to take it as part-and-parcel along with 'positive' comments. We don't have to accept negativity that is intended to be nothing but destructive. The world has for too long been turning a blind eye to negativity and look at the state of the world now!
No, if someone offers a negative and destructive comment, I say jump all over that persons head. Confront them, back them into a corner, tear them down until they reveal the whimpering cowards they really are, show no mercy. Postitive comments like "this skin rocks" are benign. Comments like "this skin sucks" are malignant and like any cancer need to be cut out before it spreads.
So as not to sound too negative I will not say "I hate negative people", however I will say that hating them "rox"