I've not paid for food using Bitcoin but I've used it to pay for my antivirus and VPN subscriptions and it didn't just feel good but it was a lifesaver. At that time, there was a ban on the use of debit card for international transactions in my country and the other alternatives were not favorable because of the high fees. So I resorted to Bitcoin and since then I've been using it. Although, the ban has been lifted but I don't think I would like to use fiat again for these purpose.