it is a human quality for self sustaining ability to survive. Society is not an ultimate pedistal for trust of survival, the ultimate pedistal of trust of survival...is you. Only you can trust yourself truly and survive therefore...and this is what society calls selfish.
Whats is up with these questions? People are selfish because they choose to be choice choice choice, Money is evil because of choice people are selfish becasue of choice...why dont we jsut ask ...why do people choose?
just because the sun made us that way. Ra brought life into our bodies and that which surrounds us and gave us meaning to live, which we defined ourselves.
That is your opinion, so what else can I add other to say that we all have our own opinions of this subject.