See, you flipped the perspective, though.
I flipped the perspective from the distortion of Paul that has been presented repeatedly that husband should demand sex on the spot.
If I say, "boy, I'm really not in the mood, but my man sure is raring to go, so I'm going to give him some fun tonight" that a very different thing than if I say, "boy, I'm really not in the mood, but my man sure is raring to go, so I'll give him some because Paul said I should, and I really don't wanna make God mad".
I have had sex because I wanted to make my wife happy. And I have had sex because God says I should to prevent immorality, but both of our schedules had been busy and we hadn't gotten around to it.
My spouse and I still enjoyed it. They are not mutually exclusive. God wants you to please your spouse and it helps against immorality.
There is no conflict between the two.
In one case, I'm putting my own immediate physical desire on the shelf in order to do good things for this man because I want to do good for this man.
And the additional motivation that God says this is the best way to help your spouse is not also considered? It is for me. Both are considered, and both are good motivations.
In the other case I'm putting my own physical desires on the shelf in order to do something that will save my own butt from God's wrath.
Actually it would be to save both of you from temptation. And yes, being in God's will is still not a bad thing. Wanting to please God is not a bad thing, and I will not say it is no matter how much folks present it in these ways.
If you are only doing it to save your butt from God's wrath you are not following the text which is more concerned about both of you, your desires, and protecting each other from temptation.
You got exactly the point with the hypothetical homeless man. He has no relationship with you, so his only recourse is to hit you with some outside authority. If a marriage gets to that point, they have much bigger problems then they realize.
Yes you do. And even those could be addressed by some Scriptures if both spouses still have any regard for God left, regardless of their view of each other.
But the point being that in a marriage you do have a relationship, and it is not all about your desires, or just putting out to save your butt. It is about doing what is best for you, your spouse, and pleasing God.
And in this case the good news is you can do all of that by having sex with your spouse.
I actually found when preaching on the subject folks appreciated that. They said they wished they had heard it earlier.