Comment Re:he won't be (Score 3, Insightful) 619
It comes to preferences. My job is a job. Not a career. Not a stepping stone. Not a direction to a greater path in my field. Once I've reached a particular spot and I'm happy and/or comfortable with it - that's it.
Sure, that's fine. No one's saying it isn't. It's your choice that your work doesn't overlap with your hobbies.
But for some people, they do overlap. While it might be limiting to say, "I won't hire someone who doesn't code in their spare time," it does act as a reasonable filter. I think it's safe to assume that the set of people who do code in their spare time has very few bad programmers in it. The set of people who don't code in their spare time, however, likely has a much larger proportion of bad programmers. (You could also say that the average quality in the codes-for-fun group is likely higher.)
If you have a limited amount of time and energy to deal with hiring, and your applicant pool is large enough, using a "must code for fun" filter saves you some effort by removing a large population of bad (or even just average, probably) programmers. Does that also remove some great programmers from consideration too? Almost certainly... but it's a trade off. It's a filter with a decent number of false positives, but likely very few false negatives.