Personally I think it would be a great idea to keep some money in bitcoin for retirement. By that age I think bitcoin could be worth many times what it is now. Keeping the other half in fiat would be advisable too but we all know money depreciated drastically especially when they keep printing more and more of it.
Yeah keeping some money in bitcoins is a great idea, as we never know what value its going to reach in the future, and rest of the money would be diversified and invest in gold, as gold can also be a good investment product in the future giving some good returns on the investment.
Nah.
Gold is currently stable and not volatile.
But Bitcoin is much volatile as currently it is not majorly accepted by the world.
So if we want good returns over investment, then we can look out for Bitcoins as after wide acceptance it's value will definitely increase as there will be just 21 million Bitcoins.
Id side with gold as well over bitcoin.
I mean bitcoin is fun and exciting, but the not sexy stuff like gold keeps me sane and not turn insane like bitcoin and its volatility being everyday influenced with simple reddit threads or some other outside elements.