Groups & cooperation are not problems that individualists want to eliminate. It is simply the belief that *groups matter more than individuals* which needs to be corrected & erradicated.

Groups are abstractions, they don't really exist. It's an imaginary distinction made in individual minds. Groups don't have wants & needs, individual people do.

Any individual should be free to peacefully leave or cease contibuting to any group. If you believe individual wants & needs are less important than the continued existence of any group then you are advocating slavery or human sacrifice in the name of an abstraction.