Bryn,
If you can afford the PPL, I honestly don't see why not just do it. After all, can you think of a career where having a PPL would hurt you? For example, let's say you decided to be a lawyer. Maybe you could go into aviation law? Or maybe you decided to become a flight surgeon. Or maybe you decided to go into engineering and design flight control systems.
I could go on, but you get the point.