Hi Mom! I shoot both a 1911 (Wilson Combat CQB) and a Glock 9mm (Glock 34) in competitions. (Yeah, yeah, I know, you're supposed to get good with ONE gun, but I really enjoy shooting them both.) Although the 1911's recoil doesn't hurt or increase flinch or whatever over a 9mm, the unavoidable increased muzzle flip on a stock gun necessarily increases the time it takes to get back on target for the follow up shots. I really enjoy shooting a well tuned 1911, and have shot zillions of rounds with one. Given that both have the same level of combat accuraccy, I will ALWAYS shoot a better score with the Glock 34 9mm than with the 1911 just because of the decreased inter-shot time.
So I still shoot the 1911 .45, even knowing that my scores will be worse, just because it FEELs GOOD to shoot that old warhorse. Peace.
Note that every single Marine pictured is packing a 1911A1 .45 ACP. Quite an endorsement.