That's a good question.
The biggest reason to become a member of the co-op is that you believe and ascribe to the philosophy of a cooperative, and you would have a say. If you're a member, you have a vote on who sits on the board. You have a say in how we offer our services, which doesn't mean we don't ask non-members who are clients what they believe.
Essentially, it's a belief in the philosophy of cooperatives and the concern for the community and having an integral voice in how the services are offered.