You turn a Mac on and it works without doing anything. At least till right now, macs are a usable version of Linux. So you can tinker till your hearts content, or you don't have to tinker at all, they just work. Macs serve the best of both worlds.
When I worked in the UK I was the only Mac user in a SAP shop. I was able to do everything with SAP that I needed and a lot of things other workers in my area were not able to do because of their PCs. In order to get my job done I had to tell people "No I won't do it for you, go to IT and get them to fix/configure/install what you need to make it work on your PC".
90% of Windows PCs do exactly the same thing. The trouble is when people buy cheapo PCs and expect the same good behavior as as a $1000 Mac.