Lest you grieve for what you missed , or rejoice at what you received . God does not love the egoist and the braggart ,

First, from the rational egoist point of view, it is rational to contribute to a pension scheme now, even though this is detrimental to one's present interests (which are to spend the money now).

Homo economicus, the rationally acting egoist who populates economists models, has recently attracted criticism as well, because all too often he does not represent the real behavior of individuals. Behavioral experiments have shown conclusively the limited predictive value of this artificial construct.