I really think your statement is not complete OP. When you say bitcoin puts food on our table, you should categorically state the measures through which bitcoin puts food because there are lots of activities one can get engaged him or herself with to get food on their table through bitcoin.
You can buy bitcoin and use it to buy or exchange for food items which is commendable. You can trade bitcoin to get more profit which you can also use to buy or exchange for food items. You can also work for it ie work to earn bitcoin as a pay for your service rendered.  Typical example is this platform where people do some jobs here such as article writing, community moderation and management, web design etc which they are being paid in bitcoin and after which they can decide whatever they want to do with their bitcoin while some buy food just as you have said.