I partially agree with Mr. Book. Not personalizing your car in someway is one of the hardest things I've had to do with nearly every car I've owned.
Actually, I've only been successful with just one car....my 96 Dodge. I just couldn't see any positive reason to change it.
The Crossfire was another car I was perfectly content with when stock. But after a very short time I ralized what the car really meant to me, and I had to make the changes accordingly.