In 35 years of shooting handguns the only incidents I've had in hearing "Click" instead of "Boom" with a factory load was the result of high seated primers.
As a counterpoint to 57K's experience, every "click" I can recall from shooting centerfire factory ammunition has been the result of a failure to feed a cartridge, or failure to fully chamber and a second strike had no effect.
In fact, I can't remember a single instance where a factory centerfire round that didn't go off the first time could be persuaded to fire with a second hammer strike. I'm sure it happens, but I guess I've been unlucky in that respect.
Anyway, although my experience differs from his, my conclusion is the same--I'm not particularly concerned about not having second strike capability.