Three things go into making each person who/what they are. In order they are: Genetics, environment, personal choice. This goes for almost every aspect of our existences. Doubly so for orientation. I read all the research and did the math.
However, this only begins to scratch the surface. The fact is that most of us can get physical pleasure from either gender. I guarantee you a lot more of us would be bisexual to at least some degree in the right setting. We are born with an inclination one direction or the other (hetero or homo), our environment pushes us even further (i.e. Christian family beats kid for being weird, kid feels he must go one way or another) and in the end we make a choice about what to do with our urges. After a lot of personal education I've come to accept the fact that I'm at least hetero-flexible. I'm not gay, I couldn't handle a monogamous relationship with a guy. I'm not straight, guys can and do turn me on. I am married and I live within the confines of my marriage (and before one of you dinks says so what happens when the other shoe drops I'm far more likely to cheat on my wife with a girl than a guy. I choose to NOT cheat, period.)
In summary, mostly nature (but rarely exclusively gay or straight), some nurture (we are all products of our upbringing one way or another it's unavoidable) and our own choice (we could all work to be asexual, but where's the fun in that?)
And just because I feel a deep need: Those of you who said mostly or all nurture, you have no clue what you're talking about.
However, this only begins to scratch the surface. The fact is that most of us can get physical pleasure from either gender. I guarantee you a lot more of us would be bisexual to at least some degree in the right setting. We are born with an inclination one direction or the other (hetero or homo), our environment pushes us even further (i.e. Christian family beats kid for being weird, kid feels he must go one way or another) and in the end we make a choice about what to do with our urges. After a lot of personal education I've come to accept the fact that I'm at least hetero-flexible. I'm not gay, I couldn't handle a monogamous relationship with a guy. I'm not straight, guys can and do turn me on. I am married and I live within the confines of my marriage (and before one of you dinks says so what happens when the other shoe drops I'm far more likely to cheat on my wife with a girl than a guy. I choose to NOT cheat, period.)
In summary, mostly nature (but rarely exclusively gay or straight), some nurture (we are all products of our upbringing one way or another it's unavoidable) and our own choice (we could all work to be asexual, but where's the fun in that?)
And just because I feel a deep need: Those of you who said mostly or all nurture, you have no clue what you're talking about.