ATM Issues

I am not a member of Lake Michigan CU, but they have an ATM in close proximity to my home. Before Lake Michigan took over that location, it belonged to another credit union. The previous credit union's ATM was a member of the CREDIT UNION CO-OP NETWORK. For some reason, Lake Michigan Credit Union is not. This has proved to be a major inconvenience for me, as I now have to drive out of my way every time I need to use an ATM...because none of the other co-op ATMs are anywhere near where I frequent. It's just annoying, and I'm wondering why a credit union would not be a part of the credit union co-op network. Certainly will not be joining Lake Michigan anytime soon.