I will definitely miss some things about working, the perks mostly. Free food, a nice place to hang out with snack and drinks and WiFi, the freebies and outings and whatnot. I don’t think I care as much about the prestige part but I may very well be mistaken there.
No place I ever worked had nice enough facilities or WiFi that I wanted to be there working instead of somewhere else. A cheap polo shirt ever year or five. Nope, not worth it. Outings with people I usually have nothing in common with other than work. Nope, not worth it.
Getting to travel to Europe or around the US on business was nice -- in moderation. It wasn't always in moderation. :( Worth it for a few years, but no more.
I can have the status of "programmer" or "author" any time I want them just by doing those tasks for myself. So far, I haven't wanted them enough to bother. I'll eventually start writing again, I'm starting to get that bug, just not enough yet to finish anything.