A lot of posts, videos, blogs women sharing their disgust when a guy perceived as below them shoots his shot, they take it as a offense "Is this who I attract?" - its like a status thing for them . When I was young working as a bartender us guys would be glanced at/flirted with by older women sometimes and none of us felt offense. I was always really flattered about it. In fact when I was 20 if a 40 year old girl who looked good thought I was cute I take it as a win. But women are outright disgusted when someone less appealing (it could be a balding peer I saw it happen) shows interest. A lot of them have this visceral "who do you think you are" reaction about it.