Ya, they don't plan it out or anything, they just end up being interested in this stuff.

But if they were honest and totally aware of themselves they'd realize "hmm, you know, I actually don't care that much whether the counter is a little dirty"

I have a lot of respect for people who like things to be clean and tidy and just lead by example. (Like I sort of said in the post, the people who get preachy usually aren't even especially neat, in my experience.)