You wouldn't say there's an absolute logical view?

Let's take the example of protecting the environment.

Some people believe that since we were given all of these resources, we should exploit them to the fullest in order to benefit ourselves in the present generation. Besides, we'll probably find another planet to colonize and trash after this one so who cares what happens to this one. It's not like the destruction of this planet would have any sort of affect on the cosmological environment. (It's very difficult for me to not write with a bias).

Then there are the environmentally minded folk. These people believe that since we were given all of these resources on this beautiful planet, we should do all that we can to ensure their continued availability for, as some Native American tribes say, the Seventh Generation. We can't be certain that another habitable planet exists (while in an infinitely expanding Universe, yes, there are an infinite number of possibilities. Among those is the slim chance that Earth is the only habitable planet) so why not stay on the safe side and ensure that this planet stays around until it ends on its own terms?

To me, the latter is by far more logical.