Just my opinion, take it or leave it.
I think it's fair to start by discussing your initial assertion. While it's not exactly a life or death fire fight, watch competitive shooters and see what happens when they have a dry magazine or a malfunction. When you say "immediately realize" that's a subjective position. How fast is immediately? I recently had a string in competition where I had a dry magazine immediately followed by a malfunction. Cleared through both in around 4 seconds and finished the stage. So that's bang, click, mag change, bang, click, tap, rack, bang.. in under four seconds. PS, this isn't intended to be a brag. I am NOT a great competitor. Most of the guys I compete against are way faster. I call myself a low speed high drag malfunctioner. We fall to the level we train to right, so if you train to recognize a malfunction and clear it, you will immediately realize and clear. A light strike or misfire on a round when in the heat of life or death is not worth trying to be sure that round is fired. Besides, you could potentially waste more time trying to "diagnose" an unfired round than just clearing it and moving on. Think of it this way. If your normal range practice is to try to re-strike an unfired bullet, that is what you will do when your adrenaline kicks in and you stop thinking. You could waste seconds clicking away on a round because that's what you practice.
So why not have them? Combat tactics have changed over the years. See above, but which is faster? Bang, click, click, click, realize nothing is happening, take the mental time (even milliseconds) to recognize a misfire, address the malfunction (whether rack slide or revolve cylinder) and get back into the fight. OR Train to know when the gun doesn't go bang and immediately address the malfunction. Bang, click, tap, rack, bang. With a restrike capable pistol, you're training to keep trying to fire a potential dud rather than eject the bullet and move on.