I say 50 bitcoins will get you by retirement after huge price increases.
Say bitcoin price raises to 10,000 each
You will have $500,000
You can retire with that much money if you live frugally, and have no fixed expenses.
You can't retire with 500k, no way, no how
$500000 is a great amount to retire having a total net-worth of that kind of money is a big accomplishment, according to me that kind of money is exactly awesome for someone retiring in his 60's and targeting to live to an age of 100 only