I say YES.
Because you make the car into your own style, your personality. It's differrent from other cars.
I'll even go insane until finally I think my car is done.
I love doing it, even started on the Explorer, mom's Focus and well didn't on the CRX, because that thing.............it needs more than modding, let's just say that.
Anyway I love it. I don't think people should worry about people that do it, because 1 it's not your money or time. So don't worry about it.
Plus, look what they spend money on, TV's, golf, jewelry, plastic surgery, tanning, hair, clothes, shoes.............so yeah they mod their kitchens, golf collections, bodies or whatever anyway that is all.