Investment considered as a gambling so it is 50/50 of chances and it is depend of you on how to take risk, bitcoin is a good investment and a lot of investor choose bitcoin and hold for long term and they are all success.
Yes, if investment in the bitcoins considered as gambling, it will be just gambling and it is not investment because we won't get constant profit from put the funds in bitcoins, a lot of investors choose bitcoins and getting big profit because they know they are investing in bitcoins, they don't playing gambling with bitcoins, they learned bitcoins, search the new information, innovation of bitcoins, analysed the users bitcoins, price of bitcoins, they know everything about bitcoins and they are all success.