Here lies the problem: if we all hold our crypto and nobody uses them to transact, then the crypto fail to have real world use and as a result their value remains to be only speculative. In my opinion, if we all hold onto all the crypto, we doom the crypto to speculative bubbles.

The naysayers get to say: I told you so.

Spending crypto has its upside: for example, I think Ethereum's value increased because people were willing to spend it on ICOs.

We need to find the right balance between holding and spending crypto. People's individual decisions in a free market will create this balance.