You would still be losing purchasing power due to inflation. At this scale it as long as you are not a greedy moneywhore investing it, or not would not impact a lavish and privileged lifestyle for a few generations.
If you wanted to keep your descendents wealthy for as long as possible, you park it all in a trust, have a family office manage it for you aiming for real returns of 3%, so roughly 5-6% nominal returns and descendents get whatever real returns acrue after inflation as income forever.
You would still be losing purchasing power due to inflation. At this scale it as long as you are not a greedy moneywhore investing it, or not would not impact a lavish and privileged lifestyle for a few generations.
If you wanted to keep your descendents wealthy for as long as possible, you park it all in a trust, have a family office manage it for you aiming for real returns of 3%, so roughly 5-6% nominal returns and descendents get whatever real returns acrue after inflation as income forever.