None of that really follows, the idea that because something hasn't existed until now proves it isn't necessary is again a reductive argument that simply doesn'

None of that really follows, the idea that because something hasn't existed until now proves it isn't necessary is again a reductive argument that simply doesn't make sense. There are many things that didn't exist and thus, were unnecessary for "modern" living and yet once they were invented and adopted it would be hard to go without them.