First, there does not exist a known logical system that is more complex than first order logic. In order for such a system to exist, it would at the very least

First, there does not exist a known logical system that is more complex than first order logic. In order for such a system to exist, it would at the very least be able to prove it's own consistency, otherwise it's merely a wild guess whether it's "logical" or not. Since that premise itself violates logic (a proof exists that the only consistent logical systems that prove their own consistency are wrong). So when it comes to "a logical system of views and values", that does not exist. When it comes to systems of views and values that do not assume indefinitely prolonging human life is a good thing : 1) all religions (meaning this is what > 6 billion people on this planet think) 2) when it comes to people over 75 or so, I find it very rare to find ones that don't want to die. It baffles me that I actually know people that old other than my grandfather. I'm getting old. Oh well. 3) various atheist systems of views and values, all boil down to malthusianism of course, but they include : socialism (communism/marxism/leninism and "other" socialist views), nazism, libertarians (to some extent, according to wikipedia), conservatives, "free market enthousiasts", feminists and human rights advocates. [1] 4) economics would have a few words to say on the subject. I don't think it's as simple as you propose. I may or may not chose to become immortal ... but I'd still like the option. [1] http://en.wikipedia.org/wiki/Malthusianism http://en.wikipedia.org/wiki/Malthusianism