@Ariakas - No, not at all. I just meant to underscore how strong those societally-injected preconceptions can be before we take a hard look at them. These days I hold regard both sorts of relations equally, besides an iota of worry at the physically riskier nature of M-F sex.
So far, in this new relationship, that hasn't bothered me, either. My partners in crime are both kind, wise people with good habits.