And for a side arm there are many choices in design, not just manufacturers making their own version. You should shoot something before buying it. You might hate how it is in your hand.
Especially with the Glock, with the most forward cant of any pistol I've ever handled.
Also it has no proper safety (firing pin block and trigger safety are great for it not firing when dropped (unless it somehow falls right on an object at the wrong angle, disengaging the trigger safety and pulling the trigger, which seems just as likely as a 1911 falling [directly] on the muzzle, without a firing pin block (Series 70 Colt doesn't have a firing pin block), and firing; but, I've heard of folks accidentally discharging Glocks when putting the pistol into their holster, because something accidentally sticks into the trigger guard and pulls the trigger, as you're pushing the gun into the holster—that doesn't happen with 1911s because of the thumb safety, and the grip safety. One of those is going to be engaged when the same thing happens accidentally to a 1911 being holstered as it does when a Glock is holstered).
Depends whether it's a war theater or not. In theater give me the Glock .45, reliable as all get-out plus higher capacity, but in peace I'll take the 1911.