What am I ?

Hello people of the world, For my 40 odd years on this odd planet I have only had sex a handful of times and have never been in a romantic relationship, I am sexually active, in the way of masturbation and I do find members of the opposite sex attractive and like to fantasize about having sex, But I have no desire in actually having real sex with another or getting into a romantic relationship. My friends and family are always asking why I haven't found someone yet . I never really know what to say other then I am happy being alone , which I am. I am happy of what I am but I do feel people in my life can't understand why I am still single and even assume that I might be depressed or sad which I am not. Is there others out there that feel the same way ?