Customers should use the bitcoin because of the fact that you can make some nice amounts with it and you can also easily pay with it globally.
Its easy and I think also worth trying it at least.
If you are a customer then you won't be dealing with the fact that you can make some nice amounts from bitcoin since you will spend it and not to saved it obviously.
Well paying bitcoin is really easy if a merchants or store will make it easy like putting terminals of qr code like credit card does.