Robo-advisers have been around long enough that the question is no longer whether you should turn your investment decisions over to a computer. Now the question is: Why wouldn’t you?

The success of Wealthfront and Betterment, two startups that helped launch the trend, led mainstream investment companies including Vanguard, Schwab and Fidelity to add robo-advice services in recent years. Depending on the robo-adviser, you may also have access to human financial advisers, socially responsible investments and tax-loss harvesting to help reduce tax bills.

This is not, and never really was, a niche product only for tech-happy millennials. From the beginning, investors of all ages spotted the significant advantages of letting computers run their portfolios. In my latest for the Associated Press, the advantages of robo-advisers.