I think the argument can be made that compassion is not a naturally human virtue but a learned trait. We are basically animals with base instincts to survive and pro-create. In dire circumstances, be they real or manufactured in one's mind, the human animal comes out and compassion is non-existent. An infant has no concept of compassion. There entire existence is driven by hunger and pain avoidance to the exclusion of all else. It is not until they are integrated into society and taught social norms that concern for others is an understandable concept for them.
Valid points!
I guess it comes down who you choose to become...
Are you simply an ape, who sh*ts, f*cks and sleeps?
Because you have an as*hole, do you crap anywhere?
Because you have a willy, do you screw anything that moves?
Because you have a mouth, do you ravenously consume everything you see?
Because you can speak, do you ceaselessly warble on about meaningless nonsense?
You may have the body of an ape, but that doesn't mean you have to act like an animal...
I might suggest that the body is a system, with required input and necessary output. It's a platform of biological hardware running linguistic software.
First, the preliminary OS software: Age 0-7... Survival, how to eat, how to speak, etc...
Then, more advanced software: Age 7-13... Relationships, etc...
Higher programming: Age 13-17... Who am I, culture, society, etc...
Age 17+... Realization that the software can be re-written, that you are NOT simply what your expected to be, but a being unto yourself... Necessary rebellion against the "parent" system, search for self, discovery of personal interests, redefinition of self along one's own chosen parameters, etc...
Not a perfect example of course, but still the basic point holds. You may be a piece of biological hardware, but the software you run is up to you... Your life is yours to live, your linguistic software is yours to rewrite as you see fit. And if you so choose, you can install Compassion 2.0 on your virtual hard drive.