My thought as well. He’s already had more than his share of exciting experiences and exploration. Some people only think of themselves.
Read his auto-bio, Magnificent Desolation. Col. Aldrin has always struggled with depression and living life to its fullest - all the way to the end - is his way of coping.
Well it IS PROBABLY JUST A BIT HARDER TO GET A RUSH here on Earth when You were the 2nd Man on the Frickin’ MOON!!!
Great work!!! Thank You for Your Service.