God preordained, for his own glory and the display of His attributes of mercy and justice, a part of the human race, without any merit of their own, to eternal salvation, and another part, in just punishment of their sin, to eternal damnation.
At the end of the day, you either want or you don't want to know about it. It's a mercy thing - you have to give back. However you do it, you have to give something back. You have to.