Since cryptocurrency is gaining more popularity can you quite your job to bounty hunting or take bounty as a full time job despite the fall in cryptocurrency market.
I don't think you can quit your job and go bounty hunting because it is becoming not profitable right now. I think 2017 is the only time it boom and then disappear after that. I made huge amount of money that time tbh through bounty hunting and after that things are going the opposite. There is no assurance of making money through bounty hunting so much better choose a Bitcoin paying signature campaign as you can secure weekly rewards with it.
I also earned more in bounty campaigns before than with signatures campaigns because ICO's before most reached their hardcap but it's different now. Most ICO's today didn't reach their hardcap that's why most of them won't continue to develop the project.
So if you quit your job today and focus on Bounties, it won't sustain your daily needs especially if you have a family to support. It takes a month to get rewards from them and you have no idea how much it will worth when it listed. However, there are bounty hunters who focus solely on bounty hunting and quit their jobs.