Q. Do people need sex? My friend says he doesn't, yet he masturbates. Isn't that a need for sex?
-- F.J., Albany, New York
A. People do need sex. Your friend's masturbation involves fantasy, which reflects his need for intimacy. We can survive without that, but it's a life less lived. Some people will argue that we need sex only to reproduce, but now that can be done in a lab. Fucking for no biological reason is what makes us human. In that sense, we need it bad.