Her motivation? The response of Bank of America et al to a rule finalized this summer that would restrict banks to a maximum of 21¢ per debit-card transaction. In response, the banks said that they would charge consumers $3-5/month for the privilege of using a debit card for a transaction. Think about this for a moment — debit cards immediately draw from your checking account and the transaction is electronic. Compare that with writing a check, both in terms of time lag (the float) and labor. (Yes, some larger retailers have instant check scanning/debiting services but most retailers do not.)
A credit union is a cooperative financial institution, one that is operated for the benefit of its member-owners, not third-party investors. All profits stay in-house, so to speak. Credit union members have something in common such as geography, employer, school or membership organization and they elect the board that manages the credit union.
Federal credit unions are chartered and supervised by the National Credit Union Administration (NCUA). Your money is insured in a manner similar to the FDIC (and at the same level). If you are worried about having access to ATMs outside of your local region, make sure your credit union belongs to the Credit Union Service Centers network. There’s even an iPhone app to make finding a location easy.
Disclaimer: I am a member of the Boeing Employee Credit Union.