Even if you have really bid incomes from cryptos, you shouldnt forget about your main job if you like it. Of course, if your job is not satisfying and evolutive, you should probably search for a position in another field, and your crypto finances may help you with that.
Even if you are earning a lot of money it is not such a good idea to leave your main job behind, there are some benefits that you can get out of it that bitcoin does not offer, like social security or a retirement fund and those are important unless you have become so rich with cryptocurrencies that you can live from your earnings for the rest of your life.
I agree, crypto is a fast changing community unlike the real world where we in to, leaving your present job is not necessary, crypto is always here, even if you leave in the forum or not, alternative income is what we called it, having a stable job is a privilege for everyone.