I wont be switching. Firefox is perfect for my use case and has features I want/need.

Portable Firefox: I use workstations at three different locations during the course of my day. Using Portable Firefox to keep my settings, bookmarks and saved passwords consistent on each machine is a MUST for me.

Adblock: Not necessary, but definitely nice to have.

So yeah, while my use case is pretty specific, Firefox fits it to a T.