Who else really no longer plays?
Up until a few years ago I was really fairly active in music. When I was not playing in my own band or bands, I was out supporting friends at their gigs, or spending hours playing and practicing at home. When I wasn't playing music I was listening to music.
These days aside from a project I am in where I am essentially helping out some less experienced players once a month or so I do very little playing even at home.
There are many reason for this that I don't want to get into, but the bottom line is I really just don't feel that motivation, spark, drive or whatever you want to call it. I guess I have pretty much moved onto (or in some cases back to) other interests.