I selected "Enjoyment" — I'm not required to be involved and wouldn't do it if I didn't like it — but most of the others would probably apply to some extent.

What I did note as missing, and what would've been my preferred answer if present, is a point under the "Learning" banner. While I've made many visible contributions that would have been in the "Teaching" category, I've also learnt a huge amount over the years which, in general, would be invisible to most.

Another point would be self-interest. When applying for jobs, I usually can't offer previously written commercial code as examples of experience due to confidentiality issues. I can, however, point to examples on PerlMonks to show an understanding of various fields. I have done this on quite a few occasions.