I think we should put disclaimers on our viewpoints.
Like personally, even though I'm a dude, I'm not highly sexual. I like it ok, but I can easily do other things with my time.
Now to the point of the matter; I would love people to classify what we are as humans. I mean if I merely mention the fact that as a classification, humans fall under 'animal'... people lose their minds. 'No, we're not animals! We're humans! How can you even say that?'
But we are animals. We have animal needs, even if we want to believe we're so civilized. We have a need for territory, we have hunger and entertainment needs, needs for survival, and yes... sexual needs. Expressing it, even 'obsessing' about it is not bad until you add one factor into it.
Violence.
Violence is also a basic animal response, but it's wholly a negative one. At the very, very, VERY benign end of violence... it's used to shame another and possibly to take his or her rank. Even playful violence is used to dominate another in some fashion.
Sex is mutual. It's freely given to another. Some aspects of sex we're not all comfortable with (whips and chains, orgies, etc), but as long as everyone is a willful participant, who is it hurting? The only time sex turns bad is when you do add violence, and then it becomes rape. It becomes taking from another, hurting them, and then dominating them for years to come... even when you left.
As for body image, I don't have a great one. Face or Body. I have admittedly compared myself to those men who are considered attractive and thought 'if I looked like that, maybe women would want me'... but I never felt as bad as when I got rejected by women. The rejection never registered with 'Oh, if I was sexier, she'd want me'. It always made me feel like I was just bad as a person.
I work out to feel better. I work out to try to reclaim some self esteem. But never to be sexy. Because I know sexy isn't finite. It isn't a definable thing that if everyone follows this, we'll all be sexy as well. One girl might think I was developed just to turn her on. A friend of hers stomachs the way I look because I'm nice. They might agree on everything else in life but my attractiveness. So why should I assume all anyone cares about is how ugly I am when even best friends don't share opinions about attractiveness?
Let's see.... sex is ok, violence never is, body image... I think that's it. Yeah, I discussed. Yay me.