Why Do So Many People Pick on Vista?

Why is it that so many people pick on Microsoft for there Vista product when it supposedly borrowed all of its best features from the far superior Mac OS X? Did their implementation of the features leave something to be desired?

At a glance it appears that you can upgrade to Vista by purchasing a skinning program like WindowBlinds for $19.95. I know there are enhancements sprinkled throughout that add new features and stability, but I just don't see 5 years work for 2,000 developers.

Personally I wish Vista was more like the Mac... that way when I am at work I would feel more at home!