What I said earlier was poorly phrased. I only meant that there is a reason that we don’t allow one person to declare “we’re divorced!” and walk away - the courts have a responsibility to ensure that due care is taken in the matter, there is time for the other party to understand the consequences and get, if necessary, legal representation, and that the parties are fairly treated with respect to assets, debts, support, and responsibilities. The “why” should not be a matter for consideration, though sadly in some states it does, and worse, in some states apparently domestic abuse is not a valid response.
Interesting fact though: did you know that women’s organizations initially opposed “no fault” divorces because they felt it would let philandering husbands get off easy when they married their mistress?