Well, it's been 3 years now, so...
I don't have interest in the intellectual pursuits related to my former field of work. At least, not much. I'm on to different things.
I spend much more time on physical activities. Cycling. I got a scooter, rode that for 3 years, then got a 750 cc BMW motorcycle, and this week I'm driving to Salt Lake City to get the 1100 cc Touring Bike, and I plan to see much of the west on that bike.
Biggest adjustment has probably been the different nature of time and the rhythm of living. I --routinely-- cannot remember the date, or even the day of the week. Weekends are mainly an annoyance, because theaters and restaurants are crowded. Time is now governed by events and seasons, not by workdays and weekends.
I have time to do simple tasks and take satisfaction in that. Tomorrow I'll be cutting out a couple of tricky wood shapes to repair a gate at the house. Today, I finished painting a room and varnishing a new door. Despite my lack of skills, I often do a better job than people we hire to work on the house, because I don't care how long it takes to get it right.
Try it; you'll like it.