The only person ever to ask me that question was my ultra-liberal college-professor brother. I said, "Because I can, because I like to. I like fine machinery, fine tools as much as you like neatly solved mathematical equations and chemical formulae". No answer really was satisfactory, so I just shrugged.
I seem to hold a differing opinion, concerning shooting different types and styles of arms. Though it is true that I shot my .45 for the Centerfire matches as well as Service Pistol in three-gun Bullseye, I still feel that it is a challenge to become, not only *familiar* but *proficient* with each firearm in the vault. Kind of a personal challenge, and ..... "you never know".
Besides which, it gives me more reasons to reload, make more trips to the range, spend more time in the gunshop, . . . etc, ad infinitum.
Flash