Actually there are things you must consider prior to your present job. Don't take bitcoin as the main reason for you to quit your job. Because as long as you are enjoying in your job and the salary is enough for you then just do bitcoin as source of extra income. It is just a matter of time management if you are complaining that you dont have enough time for you to study bitcoin.
That's it If have a decent job and enough for living why risking it for bitcoin, earning money through bitcoin could only be considered as side job. Leaving the job is just not a wise move or rather stupid considering that the money earned through bitcoin is not certain.
But, if the thread maker already rich from bitcoin and probably the money can be used for living for few years, it's okay.
Yes, the future of bitcoins is not that stable as it is not completely legalized yet so depending completely on bitcoins may not be that good idea. Always try to prefer job instead of bitcoins but if you think that bitcoins are giving you good profits then job, than surely you can try bitcoins to make your life more stable.
According to me, bitcoins can help a individual to have good profits for now as it is much profitable presently but predicting the future of bitcoins is not that easy. Surely we all hope that bitcoins will live plenty more years without any huge difficulty but completely relying on it may not be that good idea.