Allow me to open a can of worms by touching briefly on what is quickly becoming the 3rd Rail of American culture, both within and without of the Church- homosexuality.
When I was studying counseling a decade ago, one of the more challenging things I was taught and had to grapple with was the idea that sexuality is not as set as we once believed, not concrete. That no one is either 100% homosexual or heterosexual and that we all are on the continuum somewhere between the two poles, and even sometimes experience movement along that continuum during our life.
After initially struggling with this idea, I came to embrace it- especially as I thought back on the experiences of many folks I had known and their sexual pasts/journeys.
(Note well what I'm saying and what I'm not saying- I'm not saying sexual behavior is relative. Behavior is a different issue, one where we make choices and exhibit control and should submit to God and His designs. The fact that our sexuality is forged in the confluence of gender and hormones and experience (both good and bad) and needs (both met and unmet) doesn't in any way free us from the obligations we have when we choose to be followers of Jesus to exhibit biblical sexual ethics and behaviors.
Also- In suggesting that same sex sexual behavior is out-of-bounds for followers of Christ, I'm not suggesting that gays and lesbians (or anyone else) should have fewer civil rights- though I would like to see the debate move laterally from "marriage" to something else. See here for a fuller explanation of my thoughts on the issue.)
So the question I had in reading this article this morning which described what I would see as a pretty mainline evangelical view towards homosexuality as "controversial" is this: If the best thinking on sexuality today describes it as somewhat fluid, and it's okay for a therapist to treat someone who, say, feels they have been born the "wrong" gender and would like help in changing, why is it now so controversial or wrong for a therapist to treat someone who says "I've become unhappy with my orientation (for religious or other reasons) and would like help in changing"?
Update: Here's another (and better) take on the issue of society's intolerance of the idea of change in sexuality: A Civil Tolerance