as a more concrete example, as I get older I'm less interested in working on the computer off hours. I've noticed I don't even play video games as much as I used to. I actually started doing wood working a couple of years ago, and playing with 3d printers. It does go in fits and starts though - sometimes I get an itch to play with something just for fun...
I think swayvil's original point was that you could still speak of work you've done in the past. They said 'show' and 'personal', but I wouldn't take that so literally if your favorite project wasn't personal. Even if under NDA, and I'm a security consultant so I know all about those, usually it's still possible to discuss the general problem being solved and how you solved it, and have a good conversation about that.
That said, I do find this hard in interviews (when asked about past experience) and prefer to just be given a web application riddled with every type of bug and try to bingo them all in the time given to show that I understand them all. That one was my favorite interview. But that might just be a different style of interview for a different type of job.
as a more concrete example, as I get older I'm less interested in working on the computer off hours. I've noticed I don't even play video games as much as I used to. I actually started doing wood working a couple of years ago, and playing with 3d printers. It does go in fits and starts though - sometimes I get an itch to play with something just for fun...