That has always been my reasoning as well. Tiger looks great, but it's nothing amazing enough for me to warrant getting rid of Panther. Spotlight is cool, yes, but I don't have a ton of files on my machine and I keep everything neat and tidy, not messy. Dashboard is cool, but I don't need a ton of widgets running in the background sucking up my valuable RAM. Google works just as fine for me to fins out those types of things. Safari RSS? I never use RSS... So, I just don't have a huge driver to move - and knowing that people have had issues with it (some minor, some major) and that it is more resource intensive, I just don't see myself moving anytime soon. Perhaps I will make the leap directly to Leopard in 2007...