To answer the topic title question, yes. Personally I don't care if a lion is hungry, he can go piss off and starve to death if the only alternative is eating and killing me.It's basically a matter of surviving. However we're also nice to those we can relate to. We can be nice for the sake of being nice as well as nice for our own sake.
e.g A crematorium worker wants you to help at the crematorium, you could help him for the sake of feeling good or for the sake of satisfying your curiosity of what a crematorium looks like but you could also go just to help. You might gain nothing from going there but still go there for the sake of helping. You might have hated your decision as your money could have gotten burned, you might be angry at yourself and very stressed out or you might have gotten nightmares from the dead people but your reason for going there would still have been for the sake of being nice.
If people were nice for the sake of being nice day in and day out, I'd not be surprised of a third of them were bitter and unhappy. It's not impossible to be nice for unselfish reasons it's just without reward and therefore in the eyes of some, pointless.
To answer the question of ,"Is everything we do, in one way or another, to benefit ourselves?" , no. Although it makes more sense to benefit yourself than not.
e.g A crematorium worker wants you to help at the crematorium, you could help him for the sake of feeling good or for the sake of satisfying your curiosity of what a crematorium looks like but you could also go just to help. You might gain nothing from going there but still go there for the sake of helping. You might have hated your decision as your money could have gotten burned, you might be angry at yourself and very stressed out or you might have gotten nightmares from the dead people but your reason for going there would still have been for the sake of being nice.
If people were nice for the sake of being nice day in and day out, I'd not be surprised of a third of them were bitter and unhappy. It's not impossible to be nice for unselfish reasons it's just without reward and therefore in the eyes of some, pointless.
To answer the question of ,"Is everything we do, in one way or another, to benefit ourselves?" , no. Although it makes more sense to benefit yourself than not.