I remember my parents expressing concern in the early part of the 1970s that they may not have enough savings when it came time to retire. But, then came the mid to late 1970s, when they started earning double digit interest on their CDs, and locked those rates in for the longest terms they could get. Plus they decided to sell a certain piece of property they no longer needed, and invest those proceeds in a CD as well. They were elated at how fast their savings grew.
My father was forced into early retirement in 1982, due to a Parkinson's Disease diagnosis. His limited mobility prevented them from some things they hoped to do in retirement, but having enough money was no longer one of their worries. Their savings were still experiencng good growth at that time - and in the years after - until 1990, 1992 - or somewhere thereabout. Even in the mid 90s, CD rates were typically 5-6%. I can't remember what year it was we started getting rates like 1% on CDs, which is unnhealthy in any ecnomy, so far as I'm concerned.
So we're finally at an average of at least 3-4.5% on CDs. It may go low again, but if inflation should rise again to the historical levels we saw 40 years ago, it should be assumed that interest rates on savings will rise also, unless the Federal Reserve develops other tactics to bring inflation under control.