Replying to Mature the new immature?

The number of times I've been on newschoolers and found someone debating with me that we should be more mature, more buttoned up, and overall something that your average person can identify with astounds me.

When I was your age, everything was about rebellion and going as far against the 'man' as you possibly could.

I can't help but get this sense like that isn't as cool as it used to be. Like everyone rebelled so much that rebelling got mainstream, so the only rebellious thing to do was to be a respectable citizen and fuck the man who wants to rebel against the perfectly sensical system.

I dunno.... maybe I just don't get it anymore. So if you're a legit under 21 person please help me understand where the fuck the youth has their head right now.