If you are feeling depressed that your efforts were wasted that's the other side of bounties.
that's why when you choose a campaign you must be willing to accept the reality.
if you can't, then leave the bounty campaign.
we also cannot blame the bounty manager, because the bounty manager is the same as we are paid when the ICO is successful.
Bounty campaign is risky to the participant because possibly if the project not reach the particular target then the participants will not get pay but people should not blame the manager because i'm pretty sure manager also want the project will successfully and before joining the campaign people also have to realize the risk