Welcome to the "Other club"! I retired 8+ years ago, spent first couple of months adjusting to the reality that it wasn't just vacation extended. After a while, my wife said, "You need to get back into the business world somehow, without going to work." She could tell I missed some of it. Ran into a couple of guys manning a SCORE booth at a local home show, ended up as a volunteer business counselor for the local Small Business Development Center, helping people on my own schedule. That was always my definition of retirement: doing what I want on my own schedule. Work? Don't have time for it!
Enjoy, my friend, with a pipe as your companion!