Think of Bitcoin less as a currency and more as a way to store and transfer larger amounts of money outside the bank's and Government's control. Especially for small and big business.

A gold/silver backed blockchain currency for day to day transactions (notes/coins) would be amazing.

Businesses wouldn't need to be forced to accept any of it. It can be a choice for them. If a customer offers Bitcoin to buy a car and the dealer says, no they don't accept Bitcoin. Fine, the customer can go to another dealer and the dealer can just sell to someone else. Or vice versa. The consumers will drive the demand as they always have. When credit cards came on the scene many businesses jumped on board right away, others took awhile and some still don't accept them. Same with personal checks. Consumers also have the choice to transact with cash, debit, credit. Freedom of choice needs to remain.