I'm curious what the opinion of people here is as far as how much F-U-Money is "enough". Obviously it probably depends on your goals, but is there a reliable way of calculating the amount needed?
In terms of the larger "for life" FU money, that's one helluva calculation but it's been attempted in several posts on HN I believe. Paying off the mortgage and $50k p.a. for life would do it for me because I'd keep doing things that earned more money anyway. That'd just be enough to live reasonably comfortably if I got ill or whatever.