Can someone more knowledgeable explain to me the reason so many Bitcoiners embrace the #hodl mentality?

I get the logic, that's not the problem. Saving money is generally better than spending. That's just wise personal finance skills. However, money is money and if you never use it to buy things, how is it any better than an incredibly expensive collection of cryptographic data? And how are more businesses expected to start accepting #Bitcoin if Bitcoiners don't ever spend their money? Furthermore, how will a Bitcoin-powered parallel economy function if everyone is stingily hoarding their coins?

As always, this is a genuine question. No hate or coin wars intended, I'm just trying to figure out what the argument is. #asknostr