A stack equal to the single block reward for this era (6.25), is approximately equivalent to… -All newly issued BTC during a day in 2048-52, or -All newly issued BTC during a month in 2068-2072, or -All newly issued BTC during a year in 2084-88, or -All newly issued BTC during the halving period of 2092-2096, or -All newly issued BTC after the year 2100 If you have children, then all the years listed above are likely during your grandchildren’s lives. Plan accordingly.