If a bill value is small, and you paid it in bitcoin on chain, you will pay very expensive on chain transaction fee. It would be especially expensive if you use centralized exchanges, platforms and submit your withdrawal from those platforms for your payment for food.
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When was the last time you made a transaction on the BTC blockchain? People who talk like you seem to live in the past, because today's on-chain transactions cost less than $0.50 (currently only $0.15).
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Have any of you ever ordered food and paid with Bitcoin? If yes, how did it feel?
I've never paid for food with BTC, but I've paid for a lot of other things like smartphones, computers, TVs, and the like - and I have to admit that it feels good to use BTC as currency, because that's what it's meant for. Unfortunately, most of the people who invest in BTC have never bought anything or paid for a service with it, but that is still a matter of choice for each individual.