Isolation: bigger houses + smaller families, an abundance of personal screens and free access to pornography. Less physical activity, more inside time, more introspection. Videogames etc catered to young males, the ones who typically go around trying to hump anything that moves, encouraging that demographic to stay safe indoors where society can't judge. 

I speak from personal experience so perhaps I am focusing just on what particularly sticks out in my life but I'm certain I'm far from alone in these considerations in my country at the very least.