It's only traders that can be so dumb to the point of quitting their job and go full time on trading because trading is stressful and time consuming, when they begin to see little profits, they might feel it is better off than going to their primary job. Just as trading in the long will lead to big losses, is the same way that if you make trading your primary job, you will be disappointed and end up in regrets because you are gambling with your future and don't know your left from your right.
However, if you are in your bitcoin accumulation process and have not reached your bitcoin target, it's impossible for you to say that you want to live on your bitcoin investment, because you need a job to continue accumulating more bitcoin and anyone without a job will not be able to invest in bitcoin and grow his portfolio, which will make you start selling too much of your bitcoin, too quick and you will regret your actions in the long run.
To crazy for them for thinking that way and they are been over shadowed by their joy towards the possibilities to gain profit from trading. But for sure they realize later on that they do a wrong decision since trading is not really a sustainable profit generating option for them. That's the reason I always discourage those people I know thinking about having a full time career in trading especially when they get hype to it and explain about the possible bad effect in their life.
Each of us especially for those who starting up really need to have stable job so that they can sustain their investment. Since without anything that can give them a passive income there's huge chance for them to fail on their long term plan with bitcoin.