I get the feeling the OP is using hyperbole for illustration, I don't know anyone that has 'sleepless nights' because of bounties, and anyone is, they are directing their time and effort in the wrong places. Many bounty hunters seem to view posting on Facebook and Twitter as work, not sure they know the definition of work. I do have more sympathy for those that write original articles or do translation work, that definitely takes time. Either way, as has been mentioned, the key is to select projects in the same way you would select if you were investing money. Don't settle for any old project, as most will invariably fail and end up being a waste of your time. Rewards vary, so make your choices wisely, and definitely don't lose sleep over it.