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.
It's possible but it doesn't guarantee a better living, there will always be some hard days when you are on bitcoin and you have no enough savings... Earning a living I think should be done on day job since it is stable and as you've said bitcoin could be a good extra help...
Yeah, it does bitcoin can not be the place to look for money. because the law has not had the bitcoin is clear and there is no country that accept bitcoin as currency (openly). So a bitcoin can only be used for investment and also as an adjunct to fulfill our lives. But it's not that bad, bitcoin bitcoin is very profitable for us. Stay focused on our jobs and do not ever think to get out of work, before the bitcoin become better