The reason is simple, nothing matches the satisfaction and fulfillment that comes from alleviating the suffering of others. Their smiles of gratitude are worth the world, and the feeling of seeing the fruits of your labor of love is unmatched. You’ll want to see those smiles again and again. The reward that someone feels when he/she decides to help someone who is going through a tough time is fulfilling beyond belief. It is almost like you feel you need to keep on helping, because you need to keep your heart satisfied and healthy.