RO doesn't seem like a good idea - completely removes a lot of the needed minerals from water that your body needs. WHO issues a warning about drinking from these kinds of systems exclusively.
As I remember the studies, minerals in water is on the order of 5-10% extra calcium, magnesium, sodium, potassium. Negligible on the rest. A nice little bump, but nothing a decent diet won’t attain. Although half of westerners are deficient in magnesium, so that one is a good supplement to take regardless.
When the trade off is arsenic, lead, pfas, bromate, hexavalent chromium, haloacetic acids, nitrates, uranium, trihalomethane, and who knows what other carcinogens…
You can purchase elemental mineral drops and add that back in to RO water. Given the importance of water and minerals, I find it to be worth it but that's definitely an individual choice, as well as a privileged one (meaning I can afford RO water and minerals to add).
I've been drinking RO water almost exclusively since conception and I'm fine. I eat a SAD(standard American diet) and I get enough minerals from my food.
