Because people who are constantly told they are good looking, can take it to their head and believe it is a certainty. And personally I find that, that tends to make them less attractive. Its like the person who says, "how can ugly people deal with being ugly?"...who on earth gave them the right to make a statement like that, beauty is in the eye of the beholder, sorry but if I don't find you attractive, I am one less person who would...
I do actually agree with you, and although there are men like it also, I do find girls are worse with it, there comes a point where they just become irritating with it.But I have also noticed that girls do not like to tell other girls they are attractive.
I do not think I am neccessarily the best looking thing around, I could do with a bit of work..lol, but I wouldn't say I was hideous, I'd say i.m more cute/pretty rather then wow stunning...and that is usually how guys describe me...BUT girls will not tell you if you are attractive...my closets friends will, but other girls will just not say anything, its like it would cause them pain to just say, yeah you got nice eyes...or smile.
Whether girl boy man or elf, if someone has good things about their looks, I would tell them, I would let them know what I think there best features are..what harm is it gonna do me?