Yes, it's good investment.You can save your money for many years and if you are lucky, maybe you will become a billionaire. And I think it can be realized because BTC has bright future.
Bitcoin is a good investment for me even have risk, always be optimistic and positive in doing every investment you make and don't be negative. We know the value is unpredictable but bitcoin is always rise and give high profit to all his investors it is your chance and opportunity to earn more profit that make you successful and billionaire.