I think I speak for the other mods when I say that I'd much rather read and respond to threads than edit or lock them.
I didn't come to TFL a decade ago to deal with problem threads and problem users, I came here because I liked the information interchange and the interaction with the members. Frankly the mod duties interfere with that.
I lock threads or edit them to keep them from getting worse and I do it when I figure it's the only way to avoid more cleanup work and more problems later. And I realize while I'm doing it that some folks are going understand why it's happening and and others won't.
Closing notes are always good, but sometimes it's not really possible to fully explain the entire rationale for a lock without writing a book.