How many scratches/marks do you have on your notebooks?
Does it bother you?
The only way a scratch could bother me would be if it were on the screen. Besides that, I couldn't care less.
I'm guessing you drive a 1978 Ford Pinto. Just as long as it gets you to work, right?
Zero on both my macs but I have the Uniea U-Suit on both my macs and use the Radtech ScreenSavrz to protect the screen.