It would be rather stupid to invest all of your money into bitcoin although doesn't mean it wont be a wise investment in the long run.
I don't think that anybody, any financial guru can predict what will happen with bTC in a year, two, 5 years etc.
It can be great financial investment or great financial lost.
Can anybody be sure about this?
I don't think so.
so, my advice to everybody is to follow this golden rule. Invest money you can afford to loose only.
No financial guru can predict what and when will happen to any market, stocks, forex, bonds...