SL = XP. I loved XP and hated Vista so bad that I switched back to Mac after about 12 years of Windows.
I have SL running on my main machine, an iMac. I have ML on my 2012 MBA, and after several months of using ML, I don't see any reason to upgrade the iMac to ML. SL does what I need, and it doesn't have annoyances such as the loss of "Save As." iCloud is nice, but there are plenty of other, often free services that provide comparable capabilities.
I still have XP running on my 1996 Dell. Still works fine, although it's gotten slow. I still have Vista on my 2007 Gateway, which I rarely use.
I have SL running on my main machine, an iMac. I have ML on my 2012 MBA, and after several months of using ML, I don't see any reason to upgrade the iMac to ML. SL does what I need, and it doesn't have annoyances such as the loss of "Save As." iCloud is nice, but there are plenty of other, often free services that provide comparable capabilities.
I still have XP running on my 1996 Dell. Still works fine, although it's gotten slow. I still have Vista on my 2007 Gateway, which I rarely use.