How often do you carry cash on you?

I myself haven’t really carried cash on me since I started having a bank account (which was many many years ago), but some places oddly enough still require some silly stipulation that has to do with paying for your merchandise with cash. Either they are doing their accounting for the day and the system is down, so they’re requiring cash payment or their DEBIT machine requires a minimum of $5 to be spent in store. (This is the stores way of justifying having to pay to have that debit machine in house)

So how do you make payments for your merchandise?