Although we often point to various topics and then ask "but does it lead to liberation?", as if to say that there is no point talking about such things, it pays to keep in mind that for a large number of people, their own fixed views about these topics acts as an obstruction to the path to liberation, and as such, the Buddha talked to them about it, and so should we. For example, for those who believe that everything in this world happens due to God, then it is certainly worth discussing what the Buddha said about these things so that they can divest themselves of these wrong views, establish right view, and practice accordingly. Although we ourselves may not have this wrong view, it does not mean that others are also free of it.
My recently moved Blog, containing some of my writings on the Buddha Dhamma, as well as a number of translations from classical Buddhist texts and modern authors, liturgy, etc.: .