I must admit, I'm having a Poe's Law moment here. Do you really feel this way because of a few additional features and UI tweaks?
I have also thought about making the jump back to Linux, but really enjoy the sturdy unibody build quality of macs. I'm also less inclined to fiddle with OS customization and tweaking than I used to be in college, which I did a lot of when I was in Linux land.
https://help.ubuntu.com/community/MacBook https://help.ubuntu.com/community/MacBookPro
Honestly, turned your machine into a phone? Give me a break. OS X at it's core is the same as it ever was. Besides those who make extensive use of virtual desktops, most people don't have a good reason to feel otherwise.
Although I wish people would stop being so dramatic about the demise of general purpose computing, that's sky-is-falling talk and I don't think it will ever happen.