Heavy isn’t bad, we could all do with a bit of exercise. Easier to clean and maintain I disagree with, if you’re willing to do a bit of work up front.
I prefer stamped steel, lighter, stronger, won't break. But it does turn cooking in it more like cooking in a wok, faster to heat up faster to cool down. Where as cast iron is better for staying the course with a steady temp.
But the thing I like best about both is the maintainability of the pan, When I commit a sin against cooking and burn the living hell out of the poor thing, I can sit down for an hour of penance with the wire wheel and steel wool to strip the mistake out and then resurface the pan to it's nearly non-stick surface. I love having a surface I can repair with just the tools found in my kitchen.
A well-equipped kitchen will have both... and a Dutch oven, and...
My grandmother isn’t going to be using a 12” Lodge cast iron skillet no matter how much exercise she gets.
Also well seasoned cast iron is dishwasher safe, there is very little you can do to kill a cast iron pan.
If you don't mind waiting half an hour for it to heat up. (semi-/s)
There are plenty of times where you do not need or want the heat capacity of cast iron, and it's actually a 'con' for the dish. Never mind that you don't really want to cook anything that's acidic (e.g., tomatoes) in it.
Certainly having cast iron in your tool box isn't a bad idea, but stainless steal has all sorts of other advantages. And if you want something less sticky but still responsive, there's also carbon steal.