Congratulations, Collin. There really is life after railroading. I retired on the last day of 2007, and was a little bit uneasy about leaving at age 61, but I did it and life has been quite good since. You will surely feel the same way after a very short adjustment. Don't be surprised to find yourself busier than when you were working.
And you'll probably run into former co-workers just where you least expect it. Even after 15 years of being gone, some railroader will see me out in town and we'll have a minute or two of pleasant conversation. I even encountered two former co-workers at the Santa Fe Historical and Modeling Society convention last week, 600 miles from my home.