Bitcoin may be the most reliable source of income when it comes to online works. You dont have to go outside and do so much work which consumes your energy and some are risky. Here you can have money with just a few clicks. But this doesnt mean that we have to ignore jobs in the real world. We cannot depend on this a hundred percent. Imagine that if everybody would be involve in online works, people would lose their interaction ansd socialization.
Bitcoin is a good source of income but only in extra time and that also as an secondary source of income and not an primary one and if you are depending only on it then you are putting your life at big risk as you never know what will happen to bitcoins in future.