yea...I earn living with btc..but not into any project for now...buy how I earn btc is through faucet sites and trading of btc...that earn me much profits....and use it for daily expences..
Bitcoin can take care of our daily expenses if you are single, but if you have an responsibility of your family then you cannot depend only on bitcoins for living.
Yeah, bitcoin can be made as additional income but if it is used as a main income I think unwise. Moreover, if we are married and rely on income from bitcoin I think not enough. My advice we should work in real life, and play bitcoin as an extra income. hehe