If middle class Americans are poor now, wait til we hyperbitcoinze and no longer have the privilege of being born on 3rd base. (Especially tough time for Americans coming, sadly, imho)
I think it will be 25 years, But China divesting from US treasuries is the shot heard round the world. Imagine being born 25 years from now and saving up your money. El Salvador, Madeira, Both better starting points for bitcoiners than a debt based American economy.