Do You Get a Gas Receipt?

Here's an interesting question for today:

When you get gas and pay by credit card, you usually have the option to get a receipt or not. Do you get one? Why or why not?

Personally, I get a receipt because I like to know where my credit card charges stand at all times. Every couple of days or so I put any charges I have into Quicken and I know exactly what I owe.

I thought most people asked for a receipt until my brother-in-law told me he NEVER gets one -- he simply waits to get his credit card statement and the charges are listed there.

So, what do you do -- and why?