Very sensible, brandon.
Actually i've never been attracted to girls… ever. I also don't think it's abnormal. I mean undesirable if it were to become a majority of the population, because then we'd die out due to lack of offspring. But it is by no means unnatural, because you're just responding to your person/gut/libido. If it were abnormal there wouldn't be so many of us, and dating back millennia.
The thing about population dying off is untrue. Gay men and lesbian women (as well as asexuals) can and are biological parents. You can copulate with someone even if you are not attracted to their gender or you could use artificial means. Look at Oscar Wilde or Malcolm Forbes. Both gay and they fathered children through sex.