When two people come together there should be a greater vision for their futures together. A Mexican standoff ensures no progress of either party and any aggressive moves will blow the whole thing up.
Marriage is the foundation of any successful society. If that isn't taken seriously and judiciously, your building your house on sand.
In today's world, women are throwing their vaginas around like pennies in a wishing well, why entangle yourself when sex is ubiquitous?