I believe that one basic question, what we ought to do, period (the moral question), is a genuine one. There exists a true answer to it, which is independent of our thought and conceptualisation.

I am indeed a moral realist.

It is true (independently of our conceptualisation) that it is wrong to inflict pain on a sentient creature for no reason (she doesn't deserve it, I haven't promised to do it, it is not helpful to this creature or to anyone else if I do it, and so forth). But if this is a truth, existing independently of our conceptualisation, then at least one moral fact (this one) exists and moral realism is true. We have to accept this, I submit, unless we can find strong reasons to think otherwise.

It is true that it feels very differently to enjoy a good meal, taking part in an interesting conversation, or to think of how successful your children are. Suppose we do all these things at a particular time. How happy are we at the time? We do not need to calculate the value of each such feelings on any singular scale to answer this question. We need not see our happiness at the time as a mathematical function of these items. It is rather that all these experiences, together with many other factors, causally puts us at the time at a certain level of happiness, i.e. in a certain mood.

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.

To kill or not to kill, that was the question that haunted me.

I have been brought up in a culture where capital punishment is indeed anathema. I have always thought of myself as a principled opponent to capital punishment. However, when thinking about how the topic is handled in other cultures, in particular the American, Russian and Chinese ones, I have realised that my own tack on the issue was utterly superficial.