How about the odds of accidentally depressing the 1911's grip safety, AND the trigger, AND accidentally pushing off the safety, all at the same time?
A Glock is NOT like a revolver, unless it has the 11 pound cop trigger. A standardd trigger Glock is closer to a cocked 1911, with no grip safety, and no manual safety.
For perfect, error free shooters, such a safety-free 1911 would also be perfectly safe.
I'm convinced that I'm not perfect.
So, and much thanks to you for pointing that out, I did not buy another Glock.
And I don't regret it one bit.
The safety, on or off, is a natural thing to me. Something I have always been aware of. Every weapon I ever owned had one.
For me, it is, and always has been, the last step before actually pulling a trigger.
And it doesn't take very long to make that crucial decision or to execute. But I believe that is a brief moment in thought that is well spent.
Not to mention that the sumbitch ain't going to go off when I don't really, really, expect it to.