I don't think any amount of achievable retirement savings is enough to give me confidence that I could cover escalating health care costs enough that I could retire. Even if I had $10M in the bank, I would worry that the cost of health care will rise fast enough to impoverish me.
And then you die because a blood clot that formed in your leg came loose and shot up into your brain, because you’ve been sitting for weeks playing videogames.
If you retire with no SS, medicare, an insurance that is required to cover you, medicaid to keep the doors open for even a retirement home to care for you, and your 401K is destroyed from the plunging depression that's on the rise... it might be cool to worry a bit.
Just plug my old ass into the matrix. If I live to see 80 we'll probably have some kind of full dive VR by that point. Or at least something approaching it.