Buffet was richer than most nonagenarians put together in his fifties, and has been consistently generating 6x the US economy's growth over long periods. Insurance float is a neat source of capital if regulators will let you put it into equities and six decades of return usually beats four, but it's bizarre to pretend that BRK's outlying returns compared with other financial institutions come from longevity and access to capital. On the contrary, others have typically started off earlier with more, and generally donated rather less than Buffet over the last couple of decades...

The "index funds and live long" advice is sensible precisely because even the average savvy investor isn't likely to time value investments as well as Warren Buffet did.