Yes, but ethics can be a practical matter. The word simply denotes the question of 'how we should live', generally or specifically.No it's not, it's a practical matter.
For example, the way in which we farm unrestrainedly for profit can be shown to be ethically untenable, even if we take into account only your principle of 'what leads to survival'. There is no conflict there between ethics and practicality, therefore for something to be practical does not mean it is doesn't enter the domain of ethics. The ability to take long-term goals into account for ethical reasons would have aided our survival now considerably, if we had managed it in the 70s say.
For me survival certainly is an ethical principle and a practical matter, simultaneously.
I don't claim that they have an absolute validity, nor do I think they are simply a question of conscience and 'feeling guilty'. I think that's a kneejerk ethic based on the more downmarket sorts of modern Christian preaching; I'm not interested in that. I was taught a lot of what I count as 'spiritual' in my life by martial artists and consequently I know the facts of human life as far as survival at the hands of the violent and psychopathic is concerned. I only follow an ethic that I think helps in that regard.I'm not arguing that there are no such things as personal ethics and conscience. I'm saying that these have no absolute validity
However, careful thought and about what really is true of humanity in a world where 'the strong rule and nature pushes the weak to the wall' can bring surprising results. The arguments in Plato's http://www.ancienttexts.org/library/gre ... rgias.html are a great example. They do not depend on any sort of faith, nor on feelings of guilt, but simply concern what works best.
Or hypothetically, let's imagine that I am not born with any particular tendency to act ethically, but later on I find that to do so strengthens me in some way that I can't deny. Then I have a motive to act that way, no matter what my feelings are.
Since I'm only talking about personal morality, this doesn't rest on a question of 'absolute' morality.