I feel bad about the stores that don't take Amex. Either their owner is relying on knowledge that's decades out of date, or they have a very bad merchant accoun

I feel bad about the stores that don't take Amex. Either their owner is relying on knowledge that's decades out of date, or they have a very bad merchant account provider. Amex cards cost no more to charge than Visa/MC cards these days. There are even Visa/MC cards with higher interchange fees than any Amex card.