Yay for gays and lesbians, boo for people that hate them.  I think the problem is people don't watch enough porn   .  Anyways, I heard only two phrases I'll rehash on: first, as most species of animals besides  humans have some percentage of their populations homosexual, i think it would qualify as natural.
And second, people aren't supposed to do anything.  Life, quite fortunately, doesn't have a predefined prime directive or purpose or anything of the sort.  Rather, we can choose our own hopes, dreams, and goals.  There is no inherent need to reproduce other than to sate an instinct.

Anyways, I would much rather have a national science day...maybe celebrate with DNA strand streamers and lively discussion about quantum physics or the nature of infinity or just a little reading up on bucky balls and carbon nanofibers and nanotori, or arguing over whether dimensional tunneling is remotely plausible or silly school boyish duncery, and of course reading up on some of the newest fossils and neat tech toys and next wonder drugs you would want to forge a prescription for, and so forth.