It was designed as a tool for hunting, war and self protection. The majority of law-abiding gun owners own their guns for recreational target shooting and hunting. Many people shoot competitively in local gun clubs who have shooting teams that compete with other gun clubs. The ultimate in competitive shooting is the National Championships and of course to shoot with the United States Olympic Shooting Team. The hobby of collecting firearms is also very popular.
Many people collect antique guns or guns owned by famous people.
Finally there is a large segment of the population that is concerned for their safety, the safety of their families and the protection of their businesses and livelihoods. Personal protection is a basic human right. It would be Unconstitutional to be denied the right of self protection. I believe that the single most important aspect of the right to keep and bear arms is that private firearm ownership is a final check and balance on the scope of government power. An armed Citizenry will always keep tyranny and dictatorship at bay.