I will never invest my all money in bitcoins as its an very risky move to make as the future of bitcoin is unpredictable and if the price of bitcoin goes down then I will be loosing all my money so its better to put your funds at different places.
I think it depends on your beliefs with what you invest it, of course, we all know the saying that never put your eggs in one basket because you might lose it all and break it all. Not everything would be easy, you just have to take risks.