A number of things. Primary in my experience was Viet Nam. Until then, people generally trusted the government and each other and children were expected to respect their parents. My teen years were in the 70's, and I saw things change. Before, TV shows depicted Mom, and especially Dad, as respected, generally wise characters who loved their children and guided them as they were growing up. Afterwards, Mom, and especially Dad, are depicted as morons, kept out of the picture until they are needed for comic relief. Certainly no one would take any advice from them.
I really believe the breakdown of the nuclear family has cost us a foundation we always relied on.
The loss of respect for God and Godly institutions has caused a great deal of problems, as again, people are left with no foundation of faith with which to face tough times.
Those are just a few of the things I think caused a lot of change.
That was a great post hadit. I just wrote a lengthy response but somehow hit a button and It disappeared!!! Grrr. But suffice to say, I have long agreed with this line you wrote: I really believe the breakdown of the nuclear family has cost us a foundation we always relied on.