Investing doesn't have to be complicated; anyone can build wealth this way.Most times, anything you hear about easy money is some sort of trap or scam. But that's not always the case.Steady investments into a good exchange-traded fund (ETF) can put building wealth on autopilot, a direct route to financial freedom with virtually zero effort. Simply set up automated monthly purchases in your portfolio and wait for the companies within the ETF to grow, allowing your money to compound and your next egg to incre ...