I think that you have to talk about ideology before you have a frame within which to talk about ethics. If you are going to talk about 'long term survival', it leads to the question of long terms survival of what, and then of who, and sooner or later you are going to have to talk about 'the greater good' or you are being manifestly irresponsible.

The ethics comes in when you ask, 'responsibilty, to whom?' If the answer is "to me" I would think about that.

Don't get me wrong, my ass is covered, but if you have to think about what comes next. Shoot me -- I'm a lawyer.