Because you never know what trivial bit of information may ultimately prove to be vitally important.
Howdy! Just visiting from Wadcutter! My friend and I informally gave ourselves membership to the Gun of the Month Club back in the mid-80s. We were both single NCOs stationed in West Texas, with frequent gunshows and well-stocked gun stores. The chain grocery store down the block even had a gun and ammo section (where I added a Taurus 9-mm to the small collection I'd brought with me). We both collected some "museum pieces," some plinking guns, and some serious defensive/offensive hardware. Later on, he got married, so I had to continue the Club solo. I haven't maintained that buying pace since, and I've let a few of those guns go over the years, but I have several around from my time in the Gun of the Month Club.