Aren't we confusing our children when we allow them to be reared in same- households?

There will be those among you who spew that nonsense about children growing up in same homes and still preferring the opposite in intimacy. HOWEVER, the fact remains that at the VERY LEAST, the child will ume it's a VALID ALTERNATIVE to establish an intimate relationship with the same . Do we really think it's ok to send that message to children? Isn't man/woman what allows us to REMAIN on earth in the first place? Do we mean to teach our children that engaging in intimate relationships that would lead to self-extirmination are OK, all in the interest of "fairness?"