The Good Old Days

Why do we never notice the Good Old Days while we are living them? Why do they have to be in the past? I remember the times when things were easy and peaceful. Times when there were no clouds of worries hanging over my head. Why didn't I cherish the days when my children were younger, more than I did? Did I not see how really good they were? Did I need a future comparison to know the difference? Was living them harder than remembering them? To me, the good old days were in the late 1980's. Newly married, new house, 2 beautiful children and healthy parents. Why do the good old days have to pass so quickly?