MacVim can have all of it's toolbars removed (that's what I do). The only reason I use MacVim over vim in a terminal is because I hate hunting for my editor in all of the tabs I generally have open in my terminals...
I'm on Windows and Linux, but my reasoning is similar. I also occasionally use the mouse for text selection. On Windows I especially like using GVIM over VIM because of the extremely limited font selection for the Windows terminal.