Kahlil Gibran showed me a new world through his work The Prophet.
"You often say, 'I would give, but only to the deserving.'
The trees in your orchard say not so, nor the flocks in your pasture.
They give that they may live, for to withhold is to perish."
When you eat, remember that you do not rightfully own the fruit nor it's nutrients. All that belongs to nature and nature has generously lent it to you so that you could use those nutrients to give back to humanity and nature. You have but only borrowed that fruit's essence; it is now YOUR responsibility to fairly use it to return that essence back to the nature.
Be grateful that nature chose you as it's vessel when you eat that piece of bread, and then ponder over why you have been chosen: Why must You live and a child in a village die? The piece of bread could have become food for any of the infinite beings on this planet, but why out of all the creatures you have been nominated?
The answers to such questions are plain and simple. We MUST either give back or give forth to carry on the legacy. Eat and then give freely. Do not be selective and do not say: I will only give to the poor or the old. Have you ever heard that a tree did not give you it's fruit because of your age, caste or religion?
If nature is not differentiating between a Hindi and a Muslim or a Black and a White, then why must we act god and decide on our own? We are not gods and we must do what nature expects us to do. Nature wants us to be like nature. Nature wants us to give and let give, live and let live.