Like many good things, it's a double-edged sword. It's nice to be able to attract a man of my choice. It's not nice to be stalked and harrasssed by those not of my choosing. It's not nice that people feel they have the right to say shit to me.
And yeah, the sour grapes thing. It's bascially called levelling, it's when you need to bring someone down to your (not your, the person who happens to have sour grapes) level. If the other woman is attractive, clearly she's a bimbo because they just can't stand that someone might have both. But what gets me is that everyone I've ever met in my life has something beautiful about them. Every. Single. One. Might be the eyes, nice hair, bone structure, killer ass, great skin, but there's something.