That isn't true. The advice to buy is based on a belief in a high probability that, for the next 20-50 years, depending on your retirement horizon, a broadly di

That isn't true. The advice to buy is based on a belief in a high probability that, for the next 20-50 years, depending on your retirement horizon, a broadly diversified portfolio of highly liquid asset classes will appreciate relative to whatever legal tender currency you'd otherwise hold. Infinite growth in perpetuity is not required at all. As far as I know, if this proved to not be true, it would represent the first time ever since publicly-tradeable equity shares in private companies were invented. You're effectively saying you think the remainder of the 21st century will be worse for the industrialized west than all recent history, including a period of two world wars, the Spanish Flu epidemic, and the Great Depression all happening back to back to back to back. That is a fairly extraordinary claim that doesn't seem to be helped much by the fact that Earth will at some point hit a carrying capacity, which has always been true.