USD is better than 100 more countries currencies. But, BTC is much better than USD.

Take a look at the above table. Fiat currencies including developing countries and G20, etc. look like altcoins. USD is the most valuable legal tender. But, it can't be compared to Bitcoin(BTC).

USD value has been decreasing during the last decade, which means it fails to defend the inflation. However, BTC has succeeded to surpass the inflation.(+21,369%)

USD is controlled by the Fed, and It is unlimited to be printed. Furthermore, the monetary policies such as quantitative easing&teasing, interest(the Federal Funds) rate decision, buying corporate bonds, etc. are controlled by some people. Other legal tenders that billions people use are affected by these men. Do you think it is right?

BTC is limited and controlled by miners who have the hash power. However, miners can't ignore opinions of the BTC community. It looks like BTC is more democratic than USD. Isn't it?

Anyways, It seems that BTC is the most effective asset to defend the inflation. I agree. But, I think altcoins are much better than BTC with respect to profit ratios. Of course, altcoins are more risky than BTC. So, before investing altcoins, DYOR(Do Your Own Research) is the priority.