Kinda Surprised..
At both sides of the fence here. Those that thing SL is the be all, end all, and their stanch support for it. The same for those in the "progressive" move on! Upgrade your kit or stuff it!
I am more in the camp of use what works. On most days I use a PB running 10.4.11, a core 2 duo mini running 10.6.8 and a the 2011 mini in my signature running 10.8 something or other. The point is, each machine/OS is useful and even productive to me for what I need each to do. Are they all perfect? Nope. Do I have grips with each of them? Sure. But when it comes down to it, I get my work done during the day that I need to do, regardless of the mac, regardless of the OS, because I know how each of them can work for me.
That's it, just do not understand all the snarky back and forth, dirt kicking... After all, at the end of the day it is still OSX.... At least, the last time I checked...