When you play a doctor, you have to look like you can do it but you don't actually go and do it. It's not like you learn how to cut open somebody and go do surgery. You have to think of a human being and not play the idea of what that would look like.
Since Social Security faces a large gap between what it promises younger workers and what it can afford to pay them, private savings will likely need to play a larger role in retirement planning for younger workers.