I think it's good to have both investments and savings. Having some money available in the bank for emergencies or a vacation can for me be considered savings.
I would consider real estate, gold and bitcoin investments. But as it has already been pointed out Bitcoin is currency as well.
And since it's a new currency people have to use bitcoin for purchases. This is the only way bitcoin is going to take off as a currency.
Yeah and we cannot depend only one as to have better life in future we need to go for both saving and investment as only saving will never help you in long run as it will never help you in growing your money so one should invest his money where the risk of loosing money is less and for the same reason I would prefer to invest more portion of my wealth in gold.