I have a really hard time in the heat: unmotivated, uncomfortable, and probably unendurable to be around. But a girlfriend of mine loves it and we're always emailing back and forth about it. "Did you order up this heat wave?" "Eww, partly cloudy, low 60's, and breezy, you must be happy! :-)"
But, oh, the universally negative. A friend of DH's describes someone like that as "so hard to please, you could give her a million dollars and she'd complain the bag is too heavy."