Some people, such as myself, are here "24/7" because of a disability and it keeps them sane. I'm sure you didn't mean that as insulting as you made it sound. I was a mechanic for almost thirty years and got hurt and now can no longer work. Although I've not built many engines lately, I assure you the ones I have built number over 100. And disassembly even more since I started as a kid in a local machine shop at the bottom rung.