What part of trading miniscule transaction amounts for much larger value did you not understand?
The curve ball is that the value exchanged in non-fungible, i.e. isn't directly monetized. For example, paying 0.1 BTC per month to be able to publish your academic papers. The value enabled is much more than the value transferred monetarily. Now imagine blockchains open new markets of value which didn't exist before. Voila! Bitcoin destroyed. Watch it happen.
ah, so no one would want to save this money but just spend it!?