"Obsessive and creepy?" ...
You mean, like obsessing over the age of other runners to the point that you'd start a rude and insulting thread about it - probably laughing because you get a kick out of being rude and insulting? Dude, that's creepy.
The truth is that masters runners are pretty much just older versions of their younger selves.
Creepy and obsessive young runners like yourself grow up to be creepy, obsessive masters guys.
The rest of us continue to enjoy the sport and celebrate our and everyone else's participation.
Here's another truth: really good young runners never seem to have a problem with masters runners. It's only the really slow, obsessive, creepy ones.
But there's a place for runners like you too: Hiding out on anonymous threads with so little to cheer your dreary life that you think insulting 20 million runners is exciting and fun.
One last thing: anyone who groups 20 million runners into a single category (or two in your case) is either: a bigot, ignorant, rude, or just plain stupid.
So there you are, an assessment of you, our little troll: creepy, obsessive, slow, and stupid.
Cheers.