Why were relationships and marriages so much easier back then?

I still remember back during the late 1990s and early 2000s where everyone would be married with families by the time they hit 30. It wasn't tremendously hard to find someone. Nobody was willowing in loneliness, desperation. Nowadays, you have an entire generation of people who can't "find the right person" or every relationship they get into is doomed to fail at some point. Back during the 1990s, relationships just occurred and flourished. People had more friends, more sex, less lonely. Nowadays, almost everyone is lonely and afraid of getting with each other. Many people even condeming themselves to a life of loneliness, family-less because they are too afraid to enter a relationship again.

What has happened to our society to where relationships have began to get so lonely and dysfunctional?

Why were relationships and marriages so much easier back then?
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