I don't get why everyone's supporting the OP. It seems silly to limit your choices like this. Clearly credit/debit cards still bring a lot of convenience in this world. Why not take advantage of that?
I think he wants to stay out of the system 100% to achieve a tax free life. So far is he is doing great, since the first step is getting paid of BTC and buying with BTC, without interaction with fiat whatsoever.