[Question] Are there easy, low cost, ways to freeze personal cell samples for future therapies? And is this a good idea?

I happened to come across this old post from 2015, that (in a sort of round about way) endorses freezing some cell samples today, because having frozen cell samples from your youth might prove important for future anti-aging therapies.

I am somewhat skeptical of this being a major factor for anti-aging, but I wonder if others have more information.