You and all other humans exist because of what you say you believe would "destroy society".
Sex wasn't even associated with pregnancy, let alone progeny until fairly recent history. There are existing kinship models where the "husband" is the father of all of his wives' children, even if he's 80 years old and has ED. Native American courtship rituals placed women in control of their relationships with multiple partners. There's more than one way, and humans have done them all for millennia.
The fact that US vernacular doesn't have common terms to distinguish between the people who raise you (your parents) and the people whose genes you posses (your genitor/genetrix) speaks volumes about it's dimness in the face of modern understanding.
Just because you don't think you or the other products of your society could handle it doesn't mean an entire species is de facto incapable.
