Miss the music
Last night I did a hard drive search and dug up a bunch of recordings of my songs that I've done over the years, and converted them to mp3s (most of them pre-date the mp3 format!).
Today I listened to them in the car, on my way to -- and from -- work. Some of them I'd forgotten that I'd recorded; one of them I'd even forgotten about the song!
And, one of them was a jam I did with two guys from my dorm, at my second university.
That, combined with a version of "Is This Love" which includes Old Roommate on guitar, made me realize that I miss being in a band: there's something about making something out of nothing, and playing music with other people -- not a cover song, but our own unique creation.
One of the few things that I miss: I'm oddly "middle", in that I don't get excited about much, but also don't miss much.