I’m using a revereware pan that’s been with my family for 35 years, lightweight and works very well for my uses. Sure, a heavier one would hold more heat but I’ve never found myself wanting a different pan. I also have a larger, newer one, a cuisinart pan that is a heavier due to size but nothing compared to cast iron.
A good quality stainless set is far superior imho, you can actually keep it clean and dont have to mess around with seasoning it. Also, if you drop it, it won’t break your foot and/or flooring. Cast iron is a fad that frankly is already dying out.
Not disagreeing with you, water is definitely the best hydration. But other beverages are effective hydrators, even if some have side effects in addition to the taste.
Any drink with water in it is hydrating. There are no drinks without water. All drinks hydrate, even coffee.
My big question with older cast iron is had they been used to melt lead down to make bullets? I know it’s at least an occasional concern - another reason along with the cleaning issues and having them always smoke up kitchens to happily avoid them. I would refuse one as a gift, even.