Because it is an irresponsible gun to own. Why would you own a gun with PROVEN reliability issues, when for less money you can own a more modern, infinitely more reliable gun? I don't want any gun that will **** me over the day I need it.
1911s are notorious for being finicky pieces of shit. 1911 fans don't even argue in it's defense, they simply try to justify it's shitty design. Whenever I go shooting with a buddy and they break out a 1911 I always know it's going to be a shitty day filled with excuses. "Just use FMJ", "It needs to be broken in", "needs more oil", "must be dirty", "crappy ammo", etc. are all I ever hear.
A Glock 21, HK 45, Sig P220, are all guns of similar size and the same caliber, but are much more reliable guns.
Your existence is the longest recorded trolling session in history.