Hey,
Maybe this has been discussed in droves but I’ve not found a satisfactory answer yet.
I’m married, and I’ve got three kids, so there’s no real question about our general disposition towards life and conception.
That said, when I was younger, I always figured that once married, it was “anything goes”. I’m willing to reign that in a bit, but I feel that perhaps an insufficient distinction has been made regarding sexual acts between a licitly married couple vs. acts outside of marriage.
There is no sin if I give my wife an orgasm through oral stimulation [assuming for the time being that I then go ahead and finish with her, in her].
But why must all sexual acts be “sex” or “not sex”.
Her body and my body belong to eachother, and there is no harm in a playful teasing that does not lead to sex (“extended foreplay” over the course of the day/week).
So, why can’t I receive oral sex from her and finish without it being regular sex?
Onan’s sin was deliberately trying to not have children with his late-brother’s wife. He was not open to life - period. But that one example does not in my mind sufficiently seal the case that ALL actions where semen is spilled outside of the womb are immoral.
The best argument for that I can find is the slippery slope argument (Anscombe has a great piece on that here). But that’s not enough for me.
Why can’t I periodically - over the course of a marriage which is demonstrably open to life - have a few playful sexual acts which are not “sexual intercourse”, even though they lead to a mutual climax?