Lawyer, right? JAG?
For some odd reason, you apparently assume that lawyers are all on the same side. Most lawsuits actually have two sides to them (yes, its true!), and for every money-grubbing ambulance chaser on one side, there's an attorney on the other fighting him.
And no, its not just about money. Most of those who choose between plaintiff or defense work do it as much for philosophical reasons as for money.
Most people know that, though, so keep up with the lawyer bashing. You're so one-sided that it discredits your position. So thanks!