Sadly, what might seem like a bit of a cluster of significant musicians dying (like when Lemmy & Bowie went within weeks of each other), well at least as far as I'm concerned. Nik Turner, who I'd consider the original spirit behind Hawkwind, passed a couple of weeks ago.
When actual punk musicians start going from old age (as opposed to ODing, like Malcolm Owen), as opposed to people who influenced punks, in clusters, I'll know I won't be around a lot longer myself.
I know citing George Harrison doesn't quite fit in with a punk inspired ethos, but the title of the first album he made, after the Beatles, says it all: 'All Things Must Pass'