(1) Most people don't settle on large volumes (thats typically banks/states/institutionals) so small volumes have a high cost percentage making it not a good daily driver. The fact that there is any transaction cost makes it challenging to work with as a daily money vehicle for consumers.

(2) It requires energy to exist and keep a ledger, it also requires energy to mine. Your comment on renewable energy isn't accurate sadly and unused energy works only if you can get access to it which isn't universally available. In some jurisdictions renewable energy beats on price but this is largely on huge projects that are bid into utility grids (At least in North America). It will get there but still needs more time.

I don't see how mining subsidizes research in cheap energy.

Understand they have been debated ad nasueum and the reason is that they haven't really passed muster for the use case we are talking about.

Don't equate my arguments as saying bitcoin is bad - it doesn't have a good universal use case for money and it does have negative environmental benefits associated with it.