AutoCAD 2009 introduced the Ribbon to the user interface - and it was originally met with mixed reviews. Not a surprise since the early AutoCAD 2009 just didn't have the high IQ the past few releases did. AutoCAD 2015 has made a bold statement by removing the AutoCAD Classic workspace from the default setup (that doesn't mean there isn't a workaround). Now it's time for all you Ribbon Rebels (and you know who you are) to embrace the AutoCAD Ribbon! I could never give up the context sensitive ribbon now - check out my video for more info
Give it a try...you'll like it!