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.
Bounty will exist cause it's more beneficial for projects to pay tokens to people for the promotion than pay fiat. The question is how this procedure will transform cause now Bounty doesn't satisfy both bounty players and developers!