DiHydrogen Monoxide is deadly. It kills people. It takes only a very small amount. Some of us are immune to Di-Hydrogen Monoxide. I have been known to consume as much as a gallon a day at times. It oxidizes steel. Fish swim in it...and then they die.
Ask W.C. Fields why he doesn't consume DiHydrogen Monoxide.
And not only do fish swim in it, they do their business in it. Just ask Roseanne Rosanadana. You’re drinking from a fish toilet every time you take a swig of that nasty stuff.
Furthermore, having sex kills children. They get conceived, born, and then grow up and die of something or other. Sex kills.