As long as new projects and coins enter the cryptocurrency world, as well as this forum exists, Bounty programs will run. These new projects and old projects which wish to refine their strategies need the help of bounty hunters to spread the awareness across all over the globe.
Yes you are right. Our work is not an expensive power. Better than any advertising company. Of course the quality suffers. But still the projects are caught. Bounty will not go away while they will create new projects.