Debit cards should never be used like an everyday credit card. Caution.
Oh, and I carry lots of cash so I don't have to ever use my CC. It's amazing how much less you spend when you carry cash.
LOL... oh how both those statements are so true!!! Cash is king but I find that I don't remember what it looks like. Ha-Ha!
I carry 4 cards
2X Amex
1X Citi MC
1X Debit
Use the Amex X 2 and Citi for EVERYTHING! I don't have swipe marks on my cards, I have gouges. 
Starting Score: 642