customers use Bitcoins because they can figure out that this things might be their answer to their savings and other
benifits of it.
I do not see a retailer charge less for using the bitcoin even though they pay less transaction fees. but I do not mind.
Let's see. Retailers wouldn't actually charge any different of a value with bitcoins and transaction fees, I believe is supposed to be covered by the person who is to pay. Why people should use bitcoins is that it gives quite a better security from having to draw out paper cash to a cashless transaction.