This is an absolutely outstanding video. I really appreciate the balanced perspective. For some people, telling their parents they are gay may not be the right choice. I also appreciated the guest's perspective on preference implying a choice.
The only thing I would disagree with is the use of the word "genetic" as opposed to "congential." The evidence for a genetic link for sexual orientation isn't very strong. However, there is very strong evidence that, at least for men, gay-straight is biologically determined before birth. During the first trimester of pregnancy, a male fetus receives a "wash" of testosterone. We know that men with older brothers are statistically more likely to be gay than first-born males. They current hypothesis is that the hormone balance in the uterus is somehow different for gay males and straight males. Of course, there are probably factors that we haven't even though of yet involved also. It's a wide open field of research.
I'm glad we've finally debunked the "domineering mother" theory of homosexuality. That is based on the old psychoanalytic theory and has absolutely no empirical support. Some of Freud's early theories were pretty accurate, but his later writings, including his theory of homosexuality being "caused" by the mother-son relationship have largely not been supported by the evidence. (I guess the cocaine eventually took it's toll.) The evidence is pretty strong that whatever determines sexual orientation occurs before birth.
I also appreciated the guest's perspective on the impacts of culture on a parent's response to finding out a child is gay. The religious right has insisted on viewing homosexuality as a condition to be "treated", which is not very well supported by the evidence. Some religious-right organizations are proposing "reparative" therapy, which purports to be able to change sexual orientation. For anyone reading this who is considering this course, the scientific evidence for it's effectiveness is very weak, at best. It also rests on a presumption that homosexuality is a DISORDER, instead just a part of the normal spectrum of human sexual expression. Generally, approaches directed at promoting healthy adjustment as a homosexual have been more successful than programs directing at changing sexual orientation.
The best way to fight ignorance and hatred is through providing accurate balanced information. My thanks to Dan and Jennifer for taking on this controversial subject in a fair and balanced manner.