I don't think I have a low sex drive, but I am older than I used to be, so I don't have the same drive that I used to. Other than that - my testosterone is normal, actually almost above the normal range, I found.
That being said, I don't advocate, or think it's healthy, or ignore or "expel" sexual or other physical desires. While I wouldn't partake in the current environment, I'd be happy if I was able to engage in sexual contact with those that I feel sexual attraction to. But I'm still content without it, and I don't feel that I "need" it, or need it to be happy. Maybe that's just me?
Not really having studied Buddhism seriously yet, I can't comment in detail on how they respond to this one issue in the general sense. Of course, no major public figure would ever directly say anything positive about sexual contact between adults and children, and probably also between children or between adolescents.