Quoted from DaveH:

I've always taken the opposite course. Every extra dollar I pay towards the principal on my mortgage is free money in my pocket. It is a dollar I never have to pay interest on again, so it is all mine. It is like I'm paying myself. And unlike the markets, it is a guarantee. I don't have to wonder what millions of other people do. I don't worry about the market getting spooked. I just keep paying myself.

Quoted from UCSBrandon:

Unless your pin portfolio has more than doubled in the last seven years, they're not. In addition to the 588 point nosedive that bottom feeders are buying on today the dow would have to drop another 9,441 points to get to the levels of the last recession bottom. If telling your wife that your toys are an investment and not a depreciate asset lets you buy more pins, right on. Just know they're not.