As I'm sure Oagre and other learned friends would agree. A young couple in their early 20's with no significant assets, may well feel with justification, that there is little reason for one.
On the other hand a couple perhaps only a few years older who are marrying for a second time, perhaps with children from their previous marriage, and perhaps with significant assets, absolutely should have one -- far better to have a prenuptial agreement than be concerned about the co-mingling of premarital assets and children potentially being denied an inheritance.
This is not the case. The young man needs one the most. He is going to spend the next twenty years busting his ass and it is all going to go to her in the divorce.

