Well, earning a living with Bitcoin is actually possible, but living with a job seems to be the best option. At least Bitcoin can be, at the time, considered as a secondary source, being able to make the life more comfortable.
Yeah Earning with bitcoin is really possible because if you can make monthly profit like your salary then you can now depend on bitcoin so that you can pay your monthly bills etc buy some foods if you are going to convert your bitcoin into cash bitcoin can be the prioritize when it comes in earning.
Life is not limited only to pay bills, if bitcoin income can take care only of your monthly bills and not able to save some money for future then its useless to go with bitcoin for living.