You have heard most of the good answers and the advantage of not only cutting cost and developing ammunition that perfectly matches the weapon it is to be shot out of regarding performance for hunting or precision accuracy. Great responses from Jon, Tex and the others. But I have one other reason for reloading you might want to keep in mind. That is since they have so much problem in their attempt to control our weapons it is possible that in the future they might attempt to put unrealistic tax on ammunition in an all out attempt to control the shooting sport. I have planned ahead and have dies, bullets and powder put back for most of the weapons that I shoot frequently. And as money allows I add to my reserve. Just food for thought that also justifies the need to reload and the cost of setting it up for yourself. In addition to all mentioned the fact of self satisfaction of loading super accurate rounds yourself is a great feeling. And for me it is relaxing to spend time in solitude while loading and thinking out the operations performed.