Invest money is better than saving, if we invest $ 1000 to buy bitcoin a year ago then our money becomes $ 17,000 today, but if we saving in banks then the money is not more than $ 17,500.
But we can actually do both. Invest in bitcoin, and at the same, save it in a bank. Although it's not profitable to save your money in a bank, but atleast you feel safe with your money. I guess, investing and saving is a good partner. You're earning profit, and at the same time your saving for the future and for emergency purposes. But if you're after of earning huge profit, I suggest to just invest your money and take the risk.