Bitcoin might go down in the short run because of China, but in the long term Bitcoin and other cryptocurrencies will stabilize and go up again.
The question you need to ask yourself is: Do you believe that Bitcoin has the potential to create an economic revolution, by taking the power from the governments/banks and putting it back in the hands of the people?
In my opinion this is bigger than one nation and China is just panicking a little bit. They will understand eventually that its better to be a part of the game of the new economy than outside of it. This is why they are not banning the mining. Soon they will let the exchanges reopen.
This is not a get rich quick scheme, but with proper management you can make some nice extra cash from it. Investing in Cryptocurrency for me is not an option to get rich but an option to earn more. That eventually can make you rich or not, it will always depend on you.