It's human to look out for self first. That's not necessarily a bad thing.

It becomes bad where you look out first and only for yourself at the expense of others, or when you don't care who gets hurt as long as your own ego is caressed.

And this is where we must be careful, to always balance our interest with that of the group or community we belong.

As long as the community is protected, we would protected and safe too. But if the community collapses due to the greed of a few, then, everyone, including the few, in the long term, loses.