The fifties at the latest! for me at any rate.
The problem with this simmering decades long slide into the abyss is that there are fewer and fewer familiar with life before the initial DECAY!
ive met one woman 100 years old..whos not really interested in holding in depth discussions. the other elderly friends are in their 80’s and they dont seem to want to discuss it either. I can imagine its likely far more painful for them to see whats become of the Nation that it is for most of the rest of us.
Im two years shy of 70 and even I can remember a far FAR saner world than this one.
in twenty years those of us who can... are going to be a lot more rare