If you ownself got problem DINK or not still will have problem one lah
In all marriages, there are bound to have frictions. The same for any relationships in general. What DINKs worry is when they are ready to be parents, their bodies might not cooperate and it becomes a problem that marnee cannot solve.
For the strictly permanent DINKs, as long as the backup plan is there, either of them can leave without much hassle, in relative, to traditional couples.
Each has its own pros and cons. Also some peeps might change along the journey and part ways or reconcile.
If a woman has to depend on just looks, and not virtues, her marriage or relationships wont last long which goes the opposite direction of her primal needs and wants. Unless she singles out herself from the dating/marriage market.
There are a few of such exceptions. The quality of a good woman lies largely how she treats herself and spouse/bf in a balanced manner.