It depends on what you mean by “store of value”. I would suggest that Bitcoin is too volatile to be considered as such at present… although one could argue that it has proven to be an “increaser of value”
I do believe, however, that Bitcoin’s increasing price is the necessary driver to wider adoption, and that Bitcoin as “currency” will come later.
No one “holds” forever. Each person has a magic number at which they will begin exchanging Bitcoin for real world goods - whether it be for a house renovation, an overseas holiday, a new car - or even a new house.