Speaking as a male in his late 20s, I've got fulfilling hobbies such as working on my car, biking, exercising and programming with friends. However none of those scratch the biological itch to have physical intimacy. I am actually quite offended you'd ask of me to deny my desires and to call me selfish for wanting to to pursue what is ingrained biologically in me. There is nothing to be gained from setting my bar low for what I want in life.
The human race, if it wants itself to continue, will make that decision just fine using its thinking brain (we are evolved enough to no longer need to rely on instinctual desires for the continuation of species; if anything it only gets in the way--just look at all the wars and suicides and murders and so on).
And no one here said anything about denying a feeling. Your offense is triggered by something you seemed to have imagined. Is sexual desire the new religion? Is questioning the validity of it to be automatically taken as an act of blasphemy?
By the way, aggression is "biological curse" too. So why are we not equally going about killing others and rationalizing it in a similar manner?
The fact that you fail to thoroughly appreciate this makes it unsurprising that you bizarrely place the condition of not engaging in sexual acts (an act of desire) with your fellow human beings to be nearly on the same level as living without being in contact (an act of need) with them.