People are responding to you snarkily, but there's real value in preserving every species that exists, including gain-of-function research (Assuming it isn't conducted by idiots, no malicious motivations in the people conducting the research, and isn't kept in secrecy). The worms may be symbiotically beneficial to humans in some unknown, complex way, or could possess unique biological processes/elements that could be of medical significance. Additionally, having their genetic information in a large database WILL provide useful general biological and evolutionary information.