Good motivations for having sex are those that are based on love. It doesn't necessarily have to be romantic love, although that's strongly preferred. A woman who hooks up with a male best friend is not a slut. This may not be advisable in all cases, but it's not dirty. Also, I don't count flings (a one-night stand is not a fling) against a woman, since flings usually feel like they're going to develop into real relationships to an overly optimistic mind. Naivete and optimism are fine; I'm guilty of those myself, and I've even had (non-sexual) flings before.
Bad motivations would be revenge (against a boyfriend or father) or manipulation. People who use sex for power instead of as an expression of love are execrable.
Most casual sex falls into a "middle" territory: they're doing it for status-oriented reasons. The girls find it "fun" to get attention from high-status men, and the guys are asserting their status by getting large numbers of women to sleep with them. This variant of casual sex isn't as bad as revenge or manipulation sex, but I'd argue that it's still detrimental. The casual sex subculture represents a regression to pre-monogamous society. Especially in the early, formative years (16-20) a few men get all the casual play, as is also the case in the warlike, lawless, and polygamous societies that humanity had to transcend in order to build civilization. With causal sex, the successful "alpha" males turn into overconfident jerks and date rapists. The frustrated "gammas" become stalkers, serial killers, and school shooters.
No one should underestimate the social value of monogamy. It's a necessity for higher civilization. The alpha male spreads his genes wide and forms no empathic bonds to wives or children (we regard those with strong alpha tendencies, in modern society, as sociopaths). The monogamous beta male seeks one highly desirable partner, has small numbers of children and must invest in the relationships, giving the progeny the best odds of being successful. This makes him egalitarian (toward his wife, whereas alphas treat their wives as chattel) and future-oriented; for this reason, high-ranking betas are the drivers of civilization.
Monogamy attempts to render us all shades of "beta" status, and by reducing the reproductive stakes of social status, causes status-related violence to become a rarity rather than a common aspect of male life. Casual sex (anti-monogamy) undoes this, increasing social conflict and eroding respect and equality between the genders.
You seem to think that it is only possible to love within a monogamous relationship. There is a large subculture that would disagree with you. http://en.wikipedia.org/wiki/Polyamory
Ugh!! Stop already! This thread is dragging on and on. Everybody's view points are clear and what's happening now is argument for the sake of argument.
Why is this topic so provocative for you that you can't understand what time_management wrote? That comment isn't about casual sex. It is about the importance of monogamy.
Bad motivations would be revenge (against a boyfriend or father) or manipulation. People who use sex for power instead of as an expression of love are execrable.
Most casual sex falls into a "middle" territory: they're doing it for status-oriented reasons. The girls find it "fun" to get attention from high-status men, and the guys are asserting their status by getting large numbers of women to sleep with them. This variant of casual sex isn't as bad as revenge or manipulation sex, but I'd argue that it's still detrimental. The casual sex subculture represents a regression to pre-monogamous society. Especially in the early, formative years (16-20) a few men get all the casual play, as is also the case in the warlike, lawless, and polygamous societies that humanity had to transcend in order to build civilization. With causal sex, the successful "alpha" males turn into overconfident jerks and date rapists. The frustrated "gammas" become stalkers, serial killers, and school shooters.
No one should underestimate the social value of monogamy. It's a necessity for higher civilization. The alpha male spreads his genes wide and forms no empathic bonds to wives or children (we regard those with strong alpha tendencies, in modern society, as sociopaths). The monogamous beta male seeks one highly desirable partner, has small numbers of children and must invest in the relationships, giving the progeny the best odds of being successful. This makes him egalitarian (toward his wife, whereas alphas treat their wives as chattel) and future-oriented; for this reason, high-ranking betas are the drivers of civilization.
Monogamy attempts to render us all shades of "beta" status, and by reducing the reproductive stakes of social status, causes status-related violence to become a rarity rather than a common aspect of male life. Casual sex (anti-monogamy) undoes this, increasing social conflict and eroding respect and equality between the genders.