Ha! I'm the same way! The truck, trailer, and all the toys get a thorough cleaning before heading out on a trip and everything comes back absolutely filthy to start the process all over again. It's a pride thing for me, too, and I also use it as a chance to inspect all of the equipment and make notes of what needs attention.
Our last trip out I was carrying a friend's parents in my rig to go firewood gathering up a decently rough 4wd road. They were shocked when I pulled off the pavement onto the road we were heading up, thinking it wasn't a road at all (they've never done any offroading before). My friend's mom asked me what about my nice, clean truck, and I told her it all cleans up and the whole point of buying the truck is to have fun with it.