only desperate people with no self-confidence or self-esteem (male or female) try to "trap" anyone. The object of those doing the "trapping" will, if they themselves have self-confidence (not talking arrogance, ok?) and self-esteem can spot that a mile off and avoid it/them/him/her.
Beauty is mostly genetic, and let's face it - sagging breasts are just the luck of the draw. I'm lucky to not have that issue and I'm older than you

Most men appreciate a woman who takes pride in herself and her appearance - whether she is with a man or not is irrelevant, unless she ONLy takes care when WITH a man - esp in any long term (10yrs plus) relationships because it says "I am happy with my man and I'm going to be sure to always keep his eye, plus I respect myself and want to be well-grooomed" - not just to "keep him from straying" but because she thinks he is special.
Men ALWAYS project the message "I'm not attracted to you" to a woman whether it's verbal or not.
Curse the media and advertising agencies instead. They are the ones setting the unrealistic images of perfection - usually blonde - truly even most white women are BORED TO FREAKING DEATH with the white car, white hair, white teeth look and blonde hair colour in a box that America projects to the whole planet.
Women don't "know what they are getting" in advance either. Is the guy a loser? A playa? A liar? A pimp? You want to check whether women's boobs are saggy - heck maybe women want to know what's hanging beforehand.

I think it is you who needs to get over the outer beauty thing - would you reject a woman with saggy boobs who is talented, educated, loving, humane, a good wife and mother, an intimate, a friend, a passionate confidante? Women with blonde hair dye all want to look the same. Women wearing make up are usually trying to look unique and different to everyone else - to highlight their assets and minimize their flaws. Everyone in the world does that.
Besides... watch out! Masculinity is the next "target" of impossible body beatiful. Men... it's your turn.
