I just had a weird moment this weekend where I calculated what my yearly cost of living would be at the house I'm inheriting. My mom bought her house in cash, in a low property tax state and it's amazing what not having a mortgage will save you -- and it's a _nice_ house. Yearly CoL, counting food, a small home emergency fund and estimated maintenance of the house and car came out to around 7k.
Considering what I make from sporadic consulting, I realized that I could live off that for years just working a few weeks a year. And I only have to do that until Social Security payments kick in (though I'm probably going to try to maintain this level of income until 62).
It drilled home the point that I need to save what I'm earning here so that when the time comes I will have a nice large, easy cushion.