I believe each new generation is more liberal than it's predecessor.
A major contrast can clearly be seen with the advent of "Rock & Roll" followed by the decade of the 60s (Anti government protests, "free love", drug culture, Trust no one over 30,Civil Rights movement, pro-choice, cohabiting and having children out of wedlock, feminist movement, and marriage equality along with political correctness...)
If anyone considers those things to be "leftie universe" then the reality is they don't realize that IS the universe we live in! As I stated from the top each generation is more liberal than their parent's generation.
It's always been that way. Everyone believes their era was the best!
A "known past" is always more comfortable than an "uncertain future".
No amount of nostalgia will ever turn the clock.