Sigh. Ok, I am going to try my best to follow the quidelines here. First of all, this documentary sounds like religious propaganda, with a great deal of witnessing involved. I have a huge mental block against anyone having the gall to try to ram their personal beliefs onto anyone else.
Second, like others have stated, no one chooses to be homosexual. You either are, or you are not. People that claim to have changed their sexual preferences were simply experimenting with homosexuality.
Third, there is no cure. To cure someone means there was something wrong with them in the first place, and there is nothing wrong with being gay. All of these people who claim to be able to cure homosexuality (pray the gay away) are money grubbing frauds, who are going to have a great deal to answer for, when the time comes.
i live in a gay friendly city. We have an entire area that has been revitalized and is now booming with businesses, shops, art galleries, and really cool different restaurants. It is a major draw for for tourist money, as there are always fun, new, things going on. The revitalization of this area is due to one thing – gay couples who came into a rundown area, bought and rehabbed the old houses, and they are deserving of ALL of the credit for the boon this has brought to my city.
But, I digress. So, to answer your question. No, our society would not thrive more with no homosexuals. And, I find your question and your faux tolerance of gays to be rather sad, not to mention offensive. To claim that making a society thrive requires only the elimination of everyone who thinks, feels, looks,and acts differently that you sounds very familiar. Not a era we should even consider repeating. I do think, however, that society would thrive if we got rid of bigotry, narrow mindedness, and religious fanatics that think everyone should conform to their antiquated morality.
Might I ask as to when and on what channel you witnessed said documentary? Because, to be brutally honest, I do not believe you ever saw one.