Ahem
2.http://www.apa.org/helpcenter/sexual-orientation.aspx
"Sexual orientation refers to an enduring pattern of emotional, romantic, and/or sexual attractions to men, women, or both sexes. Sexual orientation also refers to a person’s sense of identity based on those attractions, related behaviors, and membership in a community of others who share those attractions. Research over several decades has demonstrated that sexual orientation ranges along a continuum, from exclusive attraction to the other sex to exclusive attraction to the same sex. However, sexual orientation is usually discussed in terms of three categories: heterosexual (having emotional, romantic, or sexual attractions to members of the other sex), gay/lesbian (having emotional, romantic, or sexual attractions to members of one’s own sex), and bisexual (having emotional, romantic, or sexual attractions to both men and women). This range of behaviors and attractions has been described in various cultures and nations throughout the world. Many cultures use identity labels to describe people who express these attractions. In the United States the most frequent labels are lesbians (women attracted to women), gay men (men attracted to men), and bisexual people (men or women attracted to both sexes). However, some people may use different labels or none at all.
There is no consensus among scientists about the exact reasons that an individual develops a heterosexual, bisexual, gay, or lesbian orientation. Although much research has examined the possible genetic, hormonal, developmental, social, and cultural influences on sexual orientation, no findings have emerged that permit scientists to conclude that sexual orientation is determined by any particular factor or factors. Many think that nature and nurture both play complex roles; most people experience little or no sense of choice about their sexual orientation.


Listen, I'm not gay either but I do recognize that people are people and a business that serves the public cannot choose what part of the public it wants to serve based upon protected classes. Especially when there are laws specific in that state that say so that have been deemed constitutional by the supreme law of the land of that state. If you don't like the law petition your legislature to change it. Otherwise, follow the law or face consequences. As for your predisposed vs. predetermined argument it's rather much bunk. Of course you can make a choice as a gay man to live as a hetero man with a wife and even kids. I've known friends whose fathers have seemed a little (hey how you doin?) and it turns out years later they leave the mother for another man. Essentially they are gay men and society has told them that it is not ok to be that. So they try to conform against their nature and do what the "right" thing is. Are they not gay simply because they are in this situation. For a simplified explanation such as the one you are trying to push they are not. After all they are with women and have even fathered children. But they are not living as they truly want to live. Or moreso, they are not living as they were biologically predisposed to do. Your position seems to be that it's a choice and if you feel that way you should ignore and fight (Marcus Bachman) it and just be normal. All of this is not only utter bullshit as people should not have to simply conform to what makes you comfortable, but it still doesn't change the fact that when you are open to the public and deny services based upon sexual orientation or other protected class you will face the brunt of the law. Done and done.