Excuse me but old Star Trek, while being a bit dated, was hardly badly written for the most part. It is no mistake that people still talk about Kirk, Spock, Bones, and Scotty when they talk about Star Trek and not the characters from the later shows with better special effects.
For the record, I come from right in the middle of the period in question. And I tend to draw the line from 1963 to 1968 -- roughly between the Kennedy assissination and the "Summer of Love". That's where I tend to see most people clustered that are of like attitude from the period. Though I'm sure there are exceptions.
THIS IS ALL one_particular_harbour FAULT!!!!!!!!! I only violated copyright laws....*Grin*