I'm retired a little over a year now. Loving it. Before, I was a Mechanical Engineer for 40 years, did everything from design, process/product engineering, some supervising. When I retired I was the CMM programmer/operator, used 4 different types of CAD, plus ran the Calibration program.
Now I smoke stuff, drink craft beer, read and do a variety of projects around our house that was built in the 1890s. Haven't gotten bored yet.