Some women, SOME, become full time mothers-only when they have kids and NEVER go back to wife mode (along with being a mother).
A family member of mine (female) actually rationed vagina to her husband 12 months after having a kid and basically never told the guy that she had developed some sort of repulsive physical mental funk that she never tried to seek help for.
This.
We get a long just fine. Weeks roll by, occasional family trips and vacations.
But no sex. Rare blowjob or consending sex. Which, at 40, ain't that great.
So, I stay, do my part of the chores, raise the kids etc.
But, if opportunity arises, I'll bang every chick that seems reasonable enough for the trouble it might cause.
Don't consider this as cheating but taking care of myself.
Best fucks for this are women in similar situation.
Both are in a place they don't wan't to leave and both are happy with just sex and bad jokes.