Seriously a whole decade? That's insane. I can't even imagine dealing with something for that long. The legal bills alone must have been crazy. How do people even have the energy to keep fighting that long? That's just too much.
I mean, "too much" is a bit dramatic don't you think? People fight over houses and custody for years all the time. It might just be a stubborn person who really wanted to prove a point. Your mileage may vary but I don't think it's that hard to imagine.