I sacrifice something ever day; my time. I go to work for money, not fulfilment and so I sacrifice my time in exchange for money to live and do things I enjoy. Sacrifice is a part of reality in my opinion.
DharmaBum23 put it very nicely. Sacrifice without return will ultimately lead to the depletion of a person.
Playing the Game of Life with Monopoly rules.
Monogamy might just be in my genes
Poly Events All Over