Any calculated Investment is the Best Option for the Investor and the Economy. If you just save money, you just save them, no profit there. But if you Invest them, Two things happen (just to keep the comment small)
1 - your investment grows and gives you extra money - you gain profit.
2 - your investment helps to create employment - you create employment and that helps your economy.
well, the issue is very broad, I am just keeping it short. Now it's your choice, what do you want - to keep your money? or to grow them and help your economy grow farther?
I invest in BTC, before BTC, I used to invest in gold. When I calculated the market, I found investing in BTC is more profitable than investing in Gold, So, I invested in BTC, Growing my Money and also helping to create jobs