Why should you get money for doing nothing? I think that is a good question. If your investments are earning money, for example because you invested in real estate, then you’ve driven up the price of rent for the rest of us.
But anyway, in reality almost all of the money in the stock market is held by people who are not like you, people who didn’t save their money by working a nine to five for 10 or 20 years.
Nobody is stopping you from leaving your money sitting in a bank account. Nobody is suggesting you shouldn’t save money.