Hmmm... *I'd* be willing to marry him for two years at that rate
The upside: women do often get the short end of a divorce settlement
The downside: you're back to whoever has the better lawyer and can make the most convincing case about how poorly their client is doing and how well the other party is doing. The stakes are just higher.
Basing it on future expectations is not so ridiculous. Imagine if she worked like a dog so he could finish medical school, and once he was done, he dumped her. Wouldn't past sacrifice and future expectations play into that?
*makes note to self: don't get into the divorce thing...*