stefan:
>If it is "allowed" to settle your own ethical system, everyone will set this
>in a way that facilitates his own lifestyle more or less. Also nobody can
>complain about other ethical systems since this is not allowed.

Boy, you have said a mouthful there!  I think I agree that this is the case
with most people.

>Peter Singer compares different ethical systems and writes a lot about
>axioms an ethical system must fulfill to even be called ethical. (snip)  He
>discusses killing of any type of being thouroughly.

This sounds fascinating.  I'll add it to my already intimidating reading list!
:-0

Cheers,
Martha