Actually, it's more a factor of a large paycheck, a cheap house, and general pessimism about the continued chances of the market going up over the long term as we run into many, many headwinds that seem to put a damper on continued exponential expansion on a finite planet. Oil, water, food, climate effects, boomers retiring and selling off assets for retirement, etc. I'd rather not subject myself to that uncertainty over a 30 year span. My cost of living with a decent set of gardens and a paid off house will be insanely low, regardless of what the market does.
Yes, I'm aware that over the past N hundred years, the market has never gone down over a sufficiently prolonged period, and I'm fine with losing out on the potential investment income for not having the uncertainty and the potential losses involved. I have plenty in the markets already, but I don't have 30 years worth of faith in the current trends.