If you google “homosexual life expectancies” you may find evidence of truly tragic proportions.
Some studies indicate their longevity, sadly, at thirty to forty years LESS than their heterosexual counterparts.
Though it’s unpopular to say so, anything that encourages this much early death and suffering should be discouraged.
Second hand smoke, on the other hand, is popular to demonize, even though it’s never killed anyone or actually been shown to shorten anyone’s life.