That's a good metaphor! True enough, you're just losing money over time to the inflation. But finance courses in high school have people believing that they can become millionaires if they put all of their money into savings accounts using compound interest. Sure you can, but that million will be worth much less than it was when you first started saving!
Bitcoin is one of the few alternatives to these ridiculous savings products that banks try to sell us which can actually help you to gain against inflation. Inflation is a slippery slope, even a cliff in some countries, that people have to cope with on a day to day basis. The sad thing about it is most people have no idea how it is affecting their lives.