If bitcoin becomes the official currency of the world, and everybody uses it, how do we deal with the scaling and fee problems? Do u view bitcoin as “a store of wealth such as digital gold”. or is it meant to be spent everyday for all purchases like cash. “Peer to peer electronic cash” was the original vision. We need to be able to spend everyday with low fees and fast. Is lightning network the solution for the future? im genuinely curious. 

 I’m thinking lightning will be used for everyday transactions, quick & low fees.

Cold storage will be more so where you store majority of your Bitcoin and transfer to your lightning wallet when you need to make purchases.