I am 64 and planning to retire when I am supposed to- next year at 65 1/2. I think our unit has about national average age wwith most of our nurses 40's to 50's and a few 30's and maybe 2 in their 20's. Most of our group has worked there for 10-30 years,including supervisers and we get along well with little back-biting. We try to support one another and trade hours etc as needed to make life better for all.
As for I remember when--I,too know how to count drops so the IV will run at prescribed rate. Also remember wearing those hats which I loved at the time (it proved that I was a real nurse!) I learned lots of tricks from older staff,including nurse aides.