Sex isn&#x27;t just a biological impulse. Many couples feel that it&#x27;s important to their bond. One might respond more reductively with &quot;why does the biological need for oxytocin to maintain intimacy get a pass&quot; or somesuch, but the fact is that sex is never something that our evolution needed to control or limit. Having <i>some</i> sex is absolutely necessary for the species to survive. You&#x27;re comparing that with maladaptive behaviors, whereas it&#x27;s the exact opposite. You might as well expect people not to eat at all.