I think the ultimate goal for quite a few is for bitcoin or some cryptocurrency to completely replace central bank currencies and really just be power to the people. There is a chance that some property of bitcoin is not optimal as an everyday currency for spending and buying products.
You could still have a cryptocurrency that changed at a predictable rate, or that could be governed in a defined and specific way by the people, so it would be less prone to corruption and hijacking by special interests.
From what I've seen about bitcoin, I don't know see any reason as to why once the volatility stops and it scales, why it couldn't ultimately be the currency. If you calculate deflation and decrease wages by that amount, I'd expect the average worker would have an increase in standard of living compared to the average worker today getting (partial) inflation matches. It would also incentivize savings.
RE: Why Bitcoin’s Fixed Supply is Problematic - According to Yanis Varoufakis