Mmm, I think to a point, your investment strategy is important, and beyond that, it's all about the savings rate. For instance, if you invest 100% in stocks, then your savings could get destroyed, even though you are consistently saving half your income. The more and more I look into it, I'm more inclined to just adopt a Permanent Portfolio strategy and stick with that, at least I stand the best chance of not LOSING money, therefore letting the savings rate really do work.