True, nothing in nature guarantees fairness.

But I believe that one purpose of civilization is to make life fair.

Not to give everyone an equal slice, but to give them an adequate slice so that they have a fair shot at having a healthy, productive, satisfying life. As someone who has more than I need (not by a ton, but all my bills are paid, and I have some surplus), I want to share it effectively at least with those who are struggling through no fault of their own.

Nobody said life was fair. But law and legislation is supposed to be fair.