In terms of nature versus nurture, I'm beginning to form the opinion that while nature may have more of an impact on our genes, the environment we are raised in and our exposure to certain stimuli has a far more dramatic and consequential effect on our learned behaviour than we are being led to believe and certainly there are many among us who would be lucky to srtuggle if left to their own devices since society has afforded them the luxury of serving the self. The trouble is that a lot of us have no parenting skills of our own and allow this behaviour to develop to a point where it can be extremely difficult to change and these children grow up selfish and spoiled, more often than not never having been punched in the face and experiencing the reality of life. It's no surprise when those around them allow them to continually get away with the behaviour they do.
Don't tiptoe. Punch them in the face. :)
Out of all the animals, humans are the most affected by nurture and the best equipped to combat nature. The punch in the face definitely is needed for everyone I think.