So I'm a relatively new MMM reader (about a year). I had a quick question. I've been saving in my 401k an additional amount in my IRA. My wife and I have a small house payment and a low interest loan (3.5%) on the mortgage, so we've been putting every extra penny into investments. However, my wife and I were talking and it seems that although the mortgage interest is low, it seems like paying it off early might yield the best returns. The current Shiller 10yr. P/E suggests that stocks will earn approx. 3.6% annually (27+:1) based on previous earnings and bonds are even worse. I guess there's always inflation to think about, but the mortgage seems like a lot of return (for the market) without a lot of risk. Am I missing something?