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.

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.

Actually, I defend the right to free abortion.

The best explanation why people agree is that they have converged on true answers.

We own ourselves. This is the core of a libertarian theory of rights. But on this theory, while we are at liberty to kill ourselves (regardless of the consequences of others), we are not allowed to kill others, not even if this means that there we be fewer murders in the future, totally speaking.

The US two party system is very different, of course. Here the people decides about who should rule them, but it is not reasonable to claim that the people rules itself through the political institutions. In comparison, I find that the standard European system is better, also as a model for global democracy.

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.