It's not just the convenience of running water, it's all of the infrastructure around making sure that water is clean and safe, which involves government regulation and audits, massive engineering projects, a lot of maintenance effort and a considerable amount of tax dollars.

Just as an example, leptospirosis is a common bacterial contaminant in untreated water:

Signs and symptoms can range from none to mild (headaches, muscle pains, and fevers) to severe (bleeding in the lungs or meningitis). Weil's disease (/ˈvaɪlz/ VILES), the acute, severe form of leptospirosis, causes the infected individual to become jaundiced (skin and eyes become yellow), develop kidney failure, and bleed. Bleeding from the lungs associated with leptospirosis is known as severe pulmonary haemorrhage syndrome.

If you go hiking in places like Hawaii (where the government gives a shit about public health) you'll see warning signs about lepto around pools and streams because people have this delusional fantasy about tropical paradises with clean flowing streams. If you go hiking in other places the lepto will still be there but the warning sign won't. Untreated, uncontrolled water is a hazard.

Everyone can't be an expert on water sanitation. Employing some experts to provide that service for thousands or millions of people is a fantastic solution. It's probably impossible to overstate how much benefit water infrastructure provides for society.

So I disagree with you. "Running water" (centrally managed water sanitation and delivery) is one of the best things human society has ever done. The benefit to public health is incalculable.

The only reason you might discount how much benefit you gain from this system is that you've grown up with it as normal. You've never had to worry about groundwater contamination, about boiling every cup of water before you drink it, about filtration or desalinization or testing for lead. Which is why I describe having access to this as a privilege - because we take it for granted.