I think it's cute that you guys think the government will leave your make-believe 1's and 0's in your "retirement accounts" alone by the time you reach your 60's and 70's.
(Yes, I have 401ks from different employers... I'm just convinced that they don't matter.)
*shrug* You do the best you can with what you have. It's wisest to have retirement savings, regular investments, an emergency cash fund and a healthy amount of assets such as a home or whatnot. The government CAN take any or all of that away from you, along with your life, with no consequences or repercussions. That's what sovereign immunity, and qualified immunity for its employees, actually means. That's the worst case. You get shot as a mistaken drug dealer, and all your assets seized without a trial.
But while that happens, it's not a guarantee. I've known plenty of folks say "(End times, apocalypse, return of religious figure, etc) is right around the corner, so why bother saving up for retirement?" Each and every one of those folks that have screamed end times are right around the corner have been dead wrong. Even the fall of the Roman Empire was the closest I can imagine, and that was a slow process by and large.
You have to hedge your bets, and that includes things not going sideways.