The graphs these analyst use may predict one thing but bitcoin hardly behaves like any traditional investment vehicle. It is indeed a very risky investment but it is riding on the blockchain whose usefulness is undeniable as even bitcoin's most ardent detractors see value in it. And in the unlikely event that the bubble bursts, I am sure that it still won't be enough to bury bitcoin under but would only serve as a large scale correction leading to bitcoin becoming more stable.