One of the reasons which people may not see is that accepting Bitcoin exposes you to more customers. If I want to buy a product and I see two stores, I'd rather patronize the guy who accepts Bitcoin. Maybe because I don't have enough cash, maybe because I find it credible that he is promoting Bitcoin, but somehow, I patronize that store.
That is if there's more people there that uses bitcoin, what would happen if you're living in a poverty stricken area in your city? That's unlikely that people there are using crypto as a primary currency and they might not even know how it works.