I was raised Christian in a very "typical" family, I think. During my teenage years I sorta threw those beliefs aside and sought out my own opinions on things. For awhile I was an Atheist, now adays I'm an weak Agnostic. A weak Agnostic simply claims ignorance when it comes to the metaphysical. I don't know if god exists or if spirituality is a nonsensical, but my default position is skepticism. The important thing though, is that I don't believe it's improvable, just that I don't know (as opposed to general Agnosticism). The way in which this functions as a world view really is that I apply the same skepticism and logical criticism to all things. I have respect for and rely on for science and its methods, because of its congruence with reason.
Science obviously recognizes the existence of intersexed peoples, however it also recognizes that things aren't as simple as that. There are many types of intersexed conditions which result from a variety of circumstances. Developing a "third sex" concept, as such, may still result in an unfair labeling and generalization for an entire group of people. At the same time, I do think a clear delineation needs to be made between those who are truly intersexual, that is born with a physical state that cannot be characterized as male or female, and those who consider themselves (I guess, for lack of a better word) transexual, people who believe they were born the 'wrong' sex.
I have the utmost sympathy for people born intersexed, not because I see the condition itself as a reason for these people to be looked upon as lesser, but because of the social slights they'll suffer as a result. It's another example of the human tendency to fear difference and treat those who are different with disdain. I certainly do not think that we, as a society, should demand that intersexed individuals pick what they want to label themselves as or have physical surgery done to force them to conform.
However, I can see the benefits of conforming (both for the society and for the individual) and I don't understand the benefit of parents refusing the surgery for their child as long as our society is this way. Even so I would not rob a parent of that choice and believe society should be accepting of people either way. Sex is such a small portion of who we are as human beings, more than anything I wish people would realize that. The only reason it seems so damned important is society's powerful influence forces people to try and assume gender stereotypes as a method for finding an identity appropriate to you (instead of creating your own identity).
But I have so many beefs with the way our culture behaves, I don't really speak for any subculture, just myself.