Then don't use Monero to save. Use it to transact. You already do this with fiat.

Network effect isn't some immutable law of the universe. Dominant brands and technologies die off in the market all the time. Ask Kodak and tape cassettes.
Monero is already proving that theory wrong in DNMs. 

Monero and Bitcoin have roughly the same amount of nodes. You can't directly compare hash power because they use different PoW algos.

*unpredictable* inflation and centralized issuance leads to distortions in the economy. Monero is predictable, decentralized, and even smaller inflation than gold.

https://bitnodes.io/
https://monero.fail/map