Or a byproduct of sustained trauma being more prevalent in modern society. There was a large shift in the way children are raised in the past 100 years, from community to individuality. Entire generations of people whose childhoods prepared them for a world that did not exist by the time they were adults. There is no template for raising children in the new world, and no community to fall back on. Many react with anger and resentment, and raise their children accordingly. Abuse is way more prevalent than most people realize.
Technological comfort just disguises it all.