Some people just are asexual or have other sexual leanings like pedophiles. Mostly that's just not their choice it's just the way it is.
If you are asexual I don't see a problem really. In fact I guess that it will save tedious trouble although some cuddling with people can be nice!
If you are pedophile then it maybe good to visit some treatment groups or psychiatrists concerning precaution in a way that it will not go into action.
But maybe you just haven't met the right man or woman for all that it's worth.
However I personally don't get how people for example get uncomfortable watching porn. I get if it does t trigger you.
Do you have sexual thoughts? Do you notice makes and/or females? I find when I am overworked, tired or anxious, I simply don’t have any interest in other people. Are you feeling overwhelmed by other events?