yea i agree with you, traditional money or conventional money have a defaluation every year, its mean that the value of the money are decreasing every year, for example 10 years ago in my country, 0.4$ can buy the 1litre of gas, but right now 0.4$ can buy 0.5 litre of gas, its a defalutaion
its very different with bitcoin, in 2011, bitcoin are priceless, but we can see right now, bitcoin is the most expensive cryptocurrencies in the world