This Bankrate article
has interviews of three women who made mistakes during their careers in how they prepared for retirement. None of the three mentioned regrets about putting too much into bank accounts. Here's an excerpt from one of them who had been wealthy when she was a tennis pro:
Unfortunately, that money didn't last a lifetime. "My lifestyle didn't change. One or two bad investments, a market crash here, a Ponzi scheme there, and lo and behold, there isn't enough to last.