On top of that, the media is full of inaccurate stats of how good an investment the stock market is, long-term. They'll say things like 8% net (after inflation is accounted for). I did my own study(1) and over my investing lifetime it's been around 3.5 - 4%. That makes a huge difference in all the sample spreadsheets out there - for someone who maxes out on the Roth since age 18, that's basically the difference between being able to retire at 62 with $2 million, and having to continue working at age 62 with savings of $500k. I guess it seems like there's more control in investing it in my own business.
(1) - Looked at dates/amounts of my entire retirement contribution history, pretended I bought S&P-500 index fund each of those dates, backtested using Yahoo's "Adjusted Close", ran an APY/XIRR calculation, subtracted avg yearly inflation over same rough time period.