Different areas present us with possibilities to test different theories.

One way of submitting your moral intuitions in relation to some issue to cognitive therapy is to learn more about how people in other cultures think about it.

Normative ethics, pursued as a free, systematic, and critical attempt to find moral truth, regardless of religious and other authorities, is a rather new adventure. Let's wait and see what will happen!

It is obvious that humanity faces existential threats of a global nature. They are global in the sense that is not possible to deal with them unless we resort to global governance.

It is quite possible that we will soon come to live under some sort of global despotism, enlightened or not. This is not a nice prospect. And there is only one way of avoiding that this happens: to establish a global democracy. And it is not too late to strive for such a democracy, of a straightforward populist nature, where people on the globe elect a world parliament, which in turn elects a world government.

These theories, deontology, the moral rights theory, and utilitarianism, contradict one another. Moreover, they give conflicting (inconsistent) recommendations. It is hence not possible to hold them together, in a pursuit of moral truth.

My conjecture is that most people will refuse to let go, even when their lives have become boring (at least in comparisons with possible lives lived by new generations). If this happens, there will eventually be no room for new generations. A kind of collective irrationality will lead to a bleak life for the last generation that decides to stay around. Unless we put and end to the human race (through global warming, for example), before this happens, individual egoism will block the path to a better world.