There are those who know Q,
And those who have yet to ask the question.
It is curious… When I look back at the "adult" generations, whose antics included barhopping, marital infidelity, and strippers…
They now want to act as if men who enjoy animated media to tell a story are fundamentally childish.
It's a maturity test to see whether or not you are capable of understanding a message.
Madoka Magica, Fate/Zero - these two shows deal with nihilism in a way no "adult" program ever has. Psycho-Pass had digested and processed the history of Western covilization and condensed it and its philosophical questions down into a single twenty four episode (or was it twenty-five) series which deconstructs sophism, collectivism, indivisualism, and analyzes how they impact society.
Hell, even Naruto broaches on the subject, although after a lot of beating around the bush and obscuring it behind teenage mutant wizard ninjas.
The reason people are embracing anime is because the production studios are not just telling good and effective stories that speak to people - but also damned good stories.