Prosecc - that sounds healthy and balanced, is roughly how I was and how I think many are. Do you have kids? Do you feel in the first place that there is a sexualization/inappropriate messages problem in terms of children and young people and the media or wider society? If you do, do you ever feel concerned that the current movement "against slut shaming" (which I gather was not needed for you to exercise sexual self-determination) feeds into sexual/objectification problems, rather than working against them?
Ninja you make an excellent point that hangs together well. I think my concern would be the creation of an environment that encourages (especially young people, which is after all what I am mostly concerned with as a parent) people to think of particular sexual behaviours as a means to an end, for a few reasons.
Firstly, people's personalities fall somewhere along a wide dial in terms of how, what, with whom and so on would be natural for them - the encouragement of particular kinds of behaviour may be an ill fit for that person, which may lead to young people behaving in ways that they regret, that have long-term consequences, or that involve personal risks, relationship complications etc. they either do not want, or are actually not personally well suited to dealing with.
Secondly, in my view we must be careful that in a wish to firmly "establish sexual self-determination" we do not treat all sexual behaviour as equally desirable from the point of view of a given individual*, or treat a woman as a sexual entity, as nothing more than a means to an end - objectification in fact. This is not so much a problem for most of us, as sexual beings we are generally able to determine what is good or bad for ourselves and exercise our own choices, but in terms of young people going through formative years or stages of reinvention, or even (because such people exist) impressionable people, I think that an inflluence which says "your sexuality is a means to an end that you should employ" is bad enough in itself.
Thirdly, I think the effects of objectification and promiscuity around children - ostensibly for the purposes of "inventing women's sexual self determination" (something that I think in fact women already have, this notion that women are "creatures" to be "pitied" until certain feminists swoop to the rescue is patronizing fucking horsehit if you'll pardon my french) - are likely to be identical to the effects of objectification and promiscuity around children for other, less "ideologically sound" reasons - that is, negative.
(whether feminism has invented that or is magically behind everyone's capacity for self-determination or not)
** (or actually indeed objectively, there may well be standards of sexual behaviour that can be shown healthy; again another point, really)
(in this case, to effect social change re: "slut shaming" and political goals)