It depends if im earning 5-10 BTC a day without miss, i will quit my day job. Earning that amount of btc everyday is very nice, you can support your family and your daily habit by that.
why you need to earn that much, i doubt you're making the same with your real life job, yeah bitcoin is unstable
but this amount you want far exceed any regular job out there, if you can earn 1 btc a day you should already leave your normal job...