I was a ProTool user for many years and switched to Logic because I was tired of the upgrade bs. It was the best thing I ever did for my music. You don't need PT to use your 11r. It will work great with many other DAW's. If you write and record your own music Logic ProX works very well. BTW I'm using Mac OS 10.9.4
_________________________
Mac OS X 10.12.3
Logic ProX 10.3.1
Audient iD22 Interface
Focusrite Pro40 FireWire Interface
Digidesign Eleven Rack