Here are a couple ways to let your plumber go without hurting his feelings:
It's not you, it's me. Say- you recently let another plumber go and you're just not ready to commit to a
I need some space. - Tell him you need some "me" time. That's why you're moving to Namibia.
You deserve better. - Tell him he's simply too good of a plumber for you. Try to do it without laughing.
Then call Mr. Rooter.