The Lone-Fund Portfolio

"These funds make sure that investors don't get to retirement and find that their portfolio is still 100% invested in equities," Healy says. "Unfortunately, we've seen a lot of that over the past couple of years."

We'd like to think, though, that readers of TheStreet.com are more sober and savvy investors than that. And if so, you're probably better off constructing your own portfolio with a small mix of funds chosen for their low expenses, tax efficiency and with the idea of maximizing return while minimizing volatility. You're all capable of that, aren't you?