Actually, in this particular case, the couple had used in vitro fertilization to attempt pregnancy, so there's some of this argument that she should be maintained in the style she'd become accustomed to. It's not just a matter of a man taking up the best fertility years of a woman's life and somehow owing her the nearest thing to giving back her youth.
ADDED: Robert Stacy McCain takes issue with my use of the phrase "best fertility years":
Professor Althouse, “the best fertility years of a woman’s life,” from a strictly scientific view, are ages 18-24. After age 27, fertility begins to decline and, in your 30s, that decline accelerates. So by the time Lieberman’s client married at 30, she was past her prime.So, I should have said her last good fertility years. When a woman marries at age 30, she's right if she thinks she's comfortably on track for childbearing. But if she turns out to have difficulty getting pregnant, as this woman did, what seemed like plenty of time can turn into an anxious struggle. I don't know what led to this particular divorce, but needing fertility treatments and enduring them without success must create pressure that some people don't handle very well. There's something very sad about a woman's desire to continue her struggle by extracting support from the husband who failed to make her pregnant. I recommend handling divorce with grace and realism, but a lot of economic advantage-taking can ensue, and you rarely know the whole story of who did what to whom and why a stepped-up legal attack seemed like a good idea. This is, above all, a failed relationship, and you can never see the ground level of that failure.