How exactly are they still doing this?

I think that in a way, there is a part of us deep down at our core that can understand core punk rock. It is a primal defiance to all rules, animosity towards authority, and the ritualistic trespassing of societal mores. We are all human animals and can tap into our innate sense of anarchy. At least we could when we were 15.

"What you say about my mohawk beeitch"

But after the frustrating hormonal surges subside, most of us begin to think more clearly as we gradually begin to understand that the world not quite as we envisioned it at 15, and that even if it isn't quite how we would like it, there are more productive ways to enact the change we wish to seek than churning out angst-ridden bar-chord anthems in our custom tailored jeans and 24 hole docs....
 
There are, of course, exceptions.  And perhaps the most profound and disturbing exception to the aforementioned notion is Johnny Rotten - the singer of the Sex Pistols who has never seemed willing or wanting to shed his incessantly ascorbic punk philosophy.  Granted, this guy deserves some credit because he started one of the most important punk bands in history ....

"Are you havin a laugh?"

But in reality, this guy is over 50 years old, and he is still performing his beef jerky punk songs about anarchy. Just tonight I saw him on the Tonight Show performing as the Sex Pistols!!!  I'm all for people milking as much money as possible out of what they have done in the past, but there is something kind of sad about watching such old guys play something that is best to be left to 15 year olds. 

"If only Sid could see me now!"