my opinion about the use of crypto as a daily payment tool does not agree, because the price is not stable, it is less appropriate when used as a means of daily payment. cyprto is more precisely our place to invest.
The price volatility right now is not even a challenge because if any merchant wants to still accept cryptocurrency, he can as well do it and convert it to fiat immediately even with some services like bitpay. We may not be where we want to be with adoption on that level where you can easily make use of cryptocurrency for daily activities, but I believe we will get there some day.
The very reason why bitcoin is created is for this purpose. It make feel sad on how people look differently on bitcoin and what really is bitcoin for.
You cannot say bitcoin was created for serving only one purpose. If investment property was not actual plan of Satoshi then he might not have set limit of 21M coins and instead of halving he might have set to reduce the production of coins with every block rather than once in ~4 years.