It's just so different. If you know how to use it it's not that bad (I use it) it's just that setting things up is difficult. The synopsis package manager is nice, but anything not included in that has to be compiled and added with a bunch of sudo commands. That's difficult for even technical users. Using it is fairly easy for everything that you would use a Mac for.

My school had the new Office too and I pushed for them to leave some computers with the old Office and they eventually did.