Is It Safe to Get Excited About Investing Again?

The Stash app targets young Uber drivers and soldiers, offering funds called Roll With Buffett, Delicious Dividends, and Aggressive Mix.
Photographer: Getty Images
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Investing used to be fun. There was that greedy voice in our heads saying: "Trust your gut! Take a risk!"

Then it all got ruined by the one-two punch of a tech bust and the worst recession in a lifetime. Suddenly, we were supposed to be sober: Who are we to bet our retirement on our skills as day traders? Calm down. Diversify. Lock your savings up in index funds, wait a few decades, and hope you can retire.