Oh, definitely. I've spent vastly less time on coding side projects since coding became a full-time job. Not that I don't still enjoy coding; I do. It's just that by the time I get home in the evening I'm pretty much coded out. Which kind of sucks, because I haven't found anything anywhere near as absorbing to replace it as a hobby.

See also: http://www.theonion.com/blogpost/find-the-thing-youre-most-p...