I can see it in cases where someone gets married in later life, perhaps already has kids and one or both have significant assets to protect and don’t want their pre-marrige ‘stuff’ to become communal property.
But for most young people starting out, on more or less equal footing, seems like a really bad idea. Getting a divorce shouldn’t be easy or friction-free. Part of having co-owned and co-mingled assets makes walking away from a marriage harder - and perhaps even causes some folks to stick out during the tough times.
Many years ago, in a time far far away from now, women could be economic prisoners, men knew that and a deal was made to support one another. Divorce was hard on the women if they were left and alimony / child support was the response. Mostly good and proper. Getting a divorce was hard as it should be.
Women became empowered, they no longer needed a man. If they pleased they could leave. If they had grounds for divorce the man could be punished leaving us where we are today.
Neither having women as economic prisoners in a bad marriage to a man who is simply no good nor the situation of today are any good at all. Marriage can be hard and not entered into lightly. It is a shame most marrying is done by hot blooded youngsters mistaking lust for love then having to work out an agreement and life or not after the lust is gone or transferred.