It's fun to hear. I mean that it's a little confusing, since we can get "Virile" perk at the game start. What was the point then, if the one who can be impregnated is you???
We are getting into "me speaking for the devs" territory in trying to answer that question, so I'll just limit myself to saying that for me, it feels more like having the option and the potency coded in at the beginning and then filling in the situations where it would be used. Seems like it'd be more simpler than the reverse.