Hume’s denial of causal connections being a kind of objective feature of the world was made on the basis of his radical empiricism – we can’t experience causality in a sensuous way. But why agree with his empiricism? Empiricism has been all but abandoned, and in its more extreme form, logical positivism, actively rejected. Why assume that Hume’s empiricism is true? Sure, we can’t have knowledge of causal relations via empirical datum, but so what? While empirical sense data is essential for a lot of knowledge, it’s certainly not necessary for all knowledge – empiricism itself cannot be verified empirically. So Hume’s critique, while in my opinion correct, ends up losing some of its force once one no longer believes the myth of empiricism.