It seems to me like software engineering is one of the only fields with people arrogant enough to assume that every good and passionate programmer should also be doing programming as a hobby.

I loved software engineering so much that I decided to turn it into a career, so that I could do it every day. But now you want me to do it every day and every night? No. My work during the day is fulfilling. My hobbies provide variety and an opportunity to pursue other interests.

I couldn't agree more. I think far too many candidates fail to make an effort to demonstrate what they have achieved in the past, which is generally a pretty good indicator of what they're capable of delivering going forward. Although portfolios are a must for designers, I'm always amazed that more developers don't put something similar together to showcase their work.