Is it good to leave my job to dedicate myself to full-time cryptocurrency?
No, in any sense! Its never good to leave something safe and secure for something insecure and risky. Of course sometimes risk taking is beneficiary, but one should never risk his family outcome for a volatile market like cryptos are. As we can witness we are being in a bearish market since some time and only those with in dept trading skills profit in those times. Most normal people just keep counting their losses.
Probably, there are some very lucky traders that left their main job for this business. meanwhile, I would never quit my work as soon as I believe that the stability in life means very much for each one.