Excellent summary of why not to invest in Bitcoin.
www.theguardian.com/technology/2018/jan/15/should-i-invest-bitcoin-dont-mr-money-moustache
Best quotes:-
Let’s start with the answer: no. You should not invest in Bitcoin.
The reason why is that it’s not an investment; just as gold, tulip bulbs, Beanie Babies, and rare baseball cards are also not investments.
These are all things that people have bought in the past, driving them to absurd prices, not because they did anything useful or produced money or had social value, but solely because people thought they could sell them on to someone else for more money in the future.
When you make this kind of purchase – which you should never do – you are speculating. This is not a useful activity. You’re playing a psychological, win-lose battle against other humans with money as the sole objective. Even if you win money through dumb luck, you have lost time and energy, which means you have lost.
and
Let’s get this straight: in order for bitcoin to be a real currency, it needs several things:
Easy and frictionless trading between people.
To be widely accepted as legal tender for all debts, public and private.
A stable value that does not fluctuate (otherwise it’s impossible to set prices).
Bitcoin has none of these things, and even safely storing it is difficult. Bitcoin exchanges such as Mt Gox in Japan, Bitfinex and various other wallets and exchanges have been hacked.
The second point is crucial. Bitcoin is only valuable if it truly becomes a critical world currency. In other words, if you truly need it to buy stuff, and thus you need to buy coins from some other person in order to conduct important bits of world commerce that you can’t do any other way. Right now, speculators are the only people driving up the price.