Other interests...
Everyone1 needs a hobby; something to stave off the boredom.
After maintaining IBM intranet material for over a decade it feels natural to host a variety of stuff on my private network, inside the firewall. It's personal stuff (all my MP3s laboriously ripped from my CDs; email exchanges with friends, family, and ex-colleagues; twelve years of weekly letters to my mother; books that await either or both a sufficiently inventive nom-de-plume and a sufficiently enterprising publisher; a collection of my favourite comix, cartoon and DVD artwork; some treasured SF).
"De gustibus non est disputandum"
as my scarily effective Latin master Mr. Greenhalgh probably would have said.
To the hackers
My server logs suggest there are some people wasting their time poking around here for PHP, JavaScript, Joomla, and MySQL holes. I'm just not that sophisticated, and the public website here is essentially simple and static. Like the webmaster, in fact. While I don't doubt each of these fine tools has both its adherents and its share of exploitable weaknesses, if I don't have them on my system that isn't going to do you much good, is it? Nor is banging the term "administrator" or "test" into various random directory trees. What you see on my Sitemap is what's here...
If you don't see it, it's not here. Recall "Virtual, Case 4!" :-)