Hi faul,
we are part individual and part social beings. you cannot exclude self-centric behaviour without removing individuality.
altruism is an important thing but it is not exclusive.
"Respecting man, whatever wrong we call,
May, must be right, as relative to all.
In human works, though labour'd on with pain,
A thousand movements scarce one purpose gain;
In God's, one single can its end produce;
Yet serves to second too some other use.
So man, who here seems principal alone,
Perhaps acts second to some sphere unknown,
Touches some wheel, or verges to some goal;
'Tis but a part we see, and not a whole.
When the proud steed shall know why man restrains
His fiery course, or drives him o'er the plains:
When the dull ox, why now he breaks the clod,
Is now a victim, and now Egypt's God:
Then shall man's pride and dulness comprehend
His actions', passions', being's, use and end;
Why doing, suff'ring, check'd, impell'd; and why
This hour a slave, the next a deity."
Alexander Pope