The whole point of investment is to get good return. Any investment is of no use if it cant benefit the investor. I have an opinion that don't wait till your 60's to start using your funds. Use them when you have energy in your body.
What will be use of a million dollar in your 60's when you can't move freely and have different odds with your health. Try to use your investment when you are young and have energies. Driving lamborgani is your 30's or 40's is more
Of course there are exceptions and have people in 60's and 70's that have good health, they can take the chance of using funds in later part of age.
Just my opinion.
Perhaps you are right but however each individuals or rather an investors has there objective, purpose and plans on why they intend to invest on Bitcoin because there people who are very wealthy that they can be able to acquire more than 20 Bitcoin without being affected on there financial state and perhaps such a person could decide to invest that much on Bitcoin and not because he intend to use the investment to buy one big stuff or the other but instead they invest the money for there family to have a better life when he is no more, so perhaps we cannot advise somebody with that motive to sell his investment all because of pleasure.
I think it will do more good for investors if they remove there mindset of channeling there possibilities of becoming rich through there investment on Bitcoin, actually I no that the purpose of every investment is the profits but that shouldn't give most investors the mindset that the only way for them to become wealthy is through there investment on Bitcoin because we no how volatile Bitcoin price can be and also the possibility of the price getting to a particular amounts is not certain but however there is every chances that the price will skyrocket in the future but we don't no when.