To say that Reproduction is at best a random by product of sexual intercourse is extreme foolishness,

No it isn't. I have two kids and yet I can't count the amount if times I've have sex even in the last twenty years (neither of my children were conceived in that time; I had a Vasectomy in 1993). The same is true of everyone who is sexually active, Gay or Straight - we do it to have mutual joyful fun with someone who turns us on, otherwise, what cultural need of contraception?

To say people fuck to have kids is akin to saying people drive on motorways to die in RTAs.

Accidents will happen.