Having no expectations doesn't lead to deprivation and disappointments. Having expectations does.
Without actively learning about personal finance, you won't achieve anything financially other than what the norm is. Again, the norm is a nightmare. It is bankruptcy in the worst case scenario and living paycheck to paycheck without fulfilling your dreams in best case scenario. That doesn't sound appealing, does it?
Optimizing the resources you already have available to you, i.e. your body, your income, your time, taxes, while also ignoring all the fluff of a convenience oriented consumer culture.