That's what other people find it hard to understand. Investing your money is a much more profitable approach than simply saving it. Money should be utilized to generate more money, rather than simply being stored away for years without any growth. Failing to make use of your money means you're missing out on potential earnings.
I think what you say is quite true because money will never increase if it is only saved and can even potentially decrease if the owner does not get other money to use and spend it on a daily basis. So the need to use money into business and investment is something that is indeed worth doing in order to be able to increase income in other forms of money so that we can become rich over time if we can continue to be profitable through business and investment that we do ourselves with the money we have.