No.
Existence had grown exponentially more expensive in my lifetime, well outpacing what a 401k or pension will realistically ever be able to achieve. At best, it might buy me 5-10 years after I am physically unable to work; if I mentally decline too soon due to age (quite likely in my family), I will die in poverty.
That isn't even touching on the possibility of a habitable climate or war, and assumes the survival of the current economic system.