I don't know what the solution is.
I do know that without family and children society is doomed and the future is a miserable place.
It would be difficult.
There are men and women whose spouses have cut them off sexually...easy for people w/o that problem to say stick with it. I feel for these people.
Most think this is a men only problem but it is not...far from it. Marriage counselor friend of mine said that is one of the biggest complaints from women in unhappy marriages..their hubby neglects them physically, no intimacy and no affection from them. I can't imagine why a husband would do that but I guess it happens.
If I had a spouse that did who cut me off I would make every herculean effort to get her to change but if not divorce would be the best option. Life is too short to go through it celibate, frustrated and unhappy.
Can't imagine an "open marriage" myself but realize there are couples who do this.