You would be surprised at how many people opt out.
Also be surprised how many opt in, and then have a 2008 WTF moment.
Reminds me of a neighbor who handed $30K to some fund, only to see huge losses. After that he bought CDs that paid 1-2%. Good he has 2 pensions coming to him.
"You would be surprised at how many people opt out."
No I wouldn't. I was a manager at a company in the early nineties. I remember trying to talk employees into taking advantage of a 401K with a pretty generous match. They just couldn't see the light. "Oh, it's insignificant".
Same thing with a 1% cash back on a credit card. With 12 billing cycles in a year it's the equivalent of a 12% annualized return on money spent, not even saved! And people like poo-poo it. "Oh, it's insignificant".