The point being that "curing" someone who does not wish to be "cured" and does not consider themselves "sick" is an invasion of their rights and criminal. There is not a "gay gene" - that is true there are at least three genes that are involved and it is not understood fully how they are "turned on". Research has shown that all mammals will exhibit homosexual behaviors when population densities increase beyond some level. Mammals from mice and rats to the great apes have been studied in this context and it is quite common. It is not a disease and therefore does not need a cure.