I agree with your comment about Bitcoin but Bitcoin has other flaws too. Bitcoin value can be manipulated just like the recent split to another version of Bitcoin by changing the algorithm of it.
Bitcoin started out great but it has reached its peak and is going downhill now.
Bitcoin can easily be controlled by the government too because since the US government prints infinite amount of money, it can also print money to monopolize Bitcoin to buy a bunch and force a crash when they unload the large amount in a short period of time creating a panic attack!