I had assumed I was too old to re-enlist, but this site says Guard with prior service can re-enlist up to age 59 as long as they'd get twenty years of service by age 60. And I would!
That said, nope. I have fond memories of my service, and I wouldn't discourage anyone from joining. But that time is behind me.
Part of me does miss it. I don't miss 2 AM radio watch, but having missions come through and be successful felt good. Not in a "dropping 95 pounds of HE on a clump of dirt" kind of way but "I can contribute to the group success."