I have a large metal sheath for my credit card. It's called a desk. I pay cash on a day-to-day basis. I use my credit card only over the phone with government agencies to pay for things I cannot pay for in person due to wait times or that I cannot pay for by electronic transfer from my bank (province of NB.ca government are arseholes). And, I carry a low line of credit. I reduced it from $20k to $2k when I retired. Of course, my travels are limited... maybe a few miles, at most, for groceries and such.

If you think I am paranoid, Air Miles Canada just shut down due to fraud. Nuff said.