I only dumped my coin if I feel that the project has no future, their developer team hasn't updated anything for a long time, doesn't have many active members in their social channel.
Getting coins that are dead or have no selling value in the market is a risk for bounty hunters, because most new projects always end in disappointment. I have felt the same disappointment, every coin I get from the project always ends in disappointment, and I was forced to throw it away., because there is nothing I can expect from the coins that have been left by the development team.