Could we even imagine a day that all properties would have to be repaired by the owners? Kind of like living in Alaska and depending on our own skill levels.
Each plumbing portion of our homes or buildings are unique. Every owner would have to be able to know how to treat each problem very uniquely. Everyone of us have some form and skill to offer.
What skill that may . Plumbing should be one of them. As one day it maybe a good possibility that plumbers my go into a selfish mode to plumb only for the few that appreciate the difficulty of the trade.
In conclusion: The plumbing world may have been around for as far as we remember. Faucets, sinks, toilets, water heaters , garbage disposals and watersofteners can’t install themselves. The owner can right?