Once you do some plumbing yourself, you can't believe that you would ever need someone to come out and do it to maintain code. lol
I replaced 50% of the plumbing in my entire house (pex conversion) in about 20 hrs, by myself.
Me too. Once you learn pex it is hard to imagine the need for a plumber. I'm replacing and moving my water heater right now. Replacing the 1/2" copper connections with modern 3/4" pex, real valves, an expansion tank, earthquake strapping, drain pan, and I'll even connect the PRV to something.