My understanding of robo advisors (and I'm super willing to be corrected on this if I'm wrong) is that they mostly allocate your money to lowest expense index f

My understanding of robo advisors (and I'm super willing to be corrected on this if I'm wrong) is that they mostly allocate your money to lowest expense index funds, which is what you recommend and most smart people already do. So why do you need robo advisors at all? Two reasons that I can see: * daily tax loss harvesting exists, so you can make more money if you are selling daily the funds that lost value so you don't have to pay taxes on the ones that gain value. Not sure how much this actually does, which is the main reason I'm not sure if robo advisors are worth it! * keeping a balance between national low-cost index funds and international low-cost index funds is desirable so you can decrease volatility without decreasing expected returns. This is not all that hard to do on your own but it is an advantage of robo-advisors that you don't have to do it yourself.