It is quite debatable if children actually stabilize marriages (I know a lot of counterexamples).
I would argue exactly the other way around:
A lasting marriage is not itself the goal (though certainly nice to grow old together), but serves the purpose of raising offspring - that's what counts for every species that has survived.
I would argue exactly the other way around: A lasting marriage is not itself the goal (though certainly nice to grow old together), but serves the purpose of raising offspring - that's what counts for every species that has survived.