I think in many cases the women who go for casual hookups with attractive guys are not necessarily looking for casual hookups, what they really want to do is get the guy to date them longer term. It's just that more attractive guys who are used to female attention find it easier to brush women off after they have got what they are after.
Girls who are promiscuous often seem to have an attitude of "If I fuck enough guys, eventually one will marry me".
i'm not really sure the last sentence of yours is correct, and is kind of misogynistic.
the price of admission to be 'considered' by an attractive man is to grab drinks and sleep with him.
the price of admission to be 'considered' by a slightly less attractive but still-qualified man is to go out with him and let him buy you dinner.
women won't even talk to men they don't find attractive, either physically or mentally. it would be like talking to a beggar, or a person who doesn't speak the same language.
Girls who are promiscuous often seem to have an attitude of "If I fuck enough guys, eventually one will marry me".