Everyone must have the right to think and say homosexual sex is immoral and destructive. There are religious and secular reasons why homosexual sex may be disapproved. In any case, it does not matter if disapproval is directed at the individual or his acts. As long as the disapproval does not physically affront the individual involved. It does not matter if homosexuality is determined by nature, nurture or choice.
People choose their sexual lifestyles.
Indeed, even the most necessary physical processes, such as eating, may be judged when the manner in which they are carried out is taken into consideration. Eating may be natural, but when someone eats sloppily, people have the right to disapprove. Tolerance for sexual behaviors unlike one's own may be a virtue to some people, as intolerance for certain sexual behaviors is, likewise, a virtue to other people. Those who participate in disapproved sexual behaviors may strategically wish to have them legitimized by the government. Americans must have the right to do wrong, as long as they do not infringe on others' rights.