Hello, I decided against upgrading to Yosemite because: 1) My computer is old, its core2duo 2GHz 2) Mavericks works extremely fine and it does what I want and I don't want to mess with it. 3) I don't want to deal with software incompatibility or bugs But... surprisingly many software vendors no longer support Mavericks even though Yosemite has been out for few months. For example, Carbon Copy Cloner, OneNote, and 1Password no longer offer feature updates to Mavericks. For those who use Yosemite, do you think there is an advantage in upgrading or is there nothing to benefit me really? I am hoping to use Yosemite when I buy a new macbook by the end of this year hopefully (when broadwell Pros are out).