Bitcoin doesn't have "hours long confirmations", it has fee market and sometimes the fees get high, meaning that transactions with lower fees won't confirm until the fees drop down. I wouldn't argue that it hurts Bitcoin viability as a payment method for everyone, but it is possible to use it as such as of now.

But the plan is to officially release Lightning Network, as it is actually allows Bitcoin to be competitive with fiat payment methods in terms of speed and fees. So you don't have to view Bitcoin as only investment or only currency, because people can choose to use it however they like.