I have carried DA in a Sig P220 (45) and S&W revolver. The S&W is a smoother operating DA as it is the general nature of S&W’s revolvers. My DAO P220 Sig has a point in the pull where the hammer is first lifted off its rest and then there is a range where I can hold the action just above hammer release; where I can again back off or commit depending on the needs of the moment. In most DA hammer-fired systems I’ve used, the longer pull gives me that chance to decide along the way. I’ve found dry fire practice aids me in discovering how far I can controllably pull the trigger without firing. Again, this gives me the ability to back off and not fire or be very ready to complete pulling the trigger and send my round downrange.
I like the reassurance a double-action handgun gives me, and maybe the jury, in that my intention is measured and the need to defend is reasoned. The last thing I - as a citizen - DEFENSIVELY - need is a pistol with a reworked single-action trigger which releases with little or no first pull travel and the equivalent of a feather falling on it in a defensive shooting after-action review. (Perhaps leaving me and others questioning if the round was fired in negligent discharge or wanton manslaughter.)
All the above said: Sometimes, survival depends on muscle memory, using the trigger you have on your weapon and knowing how it’s machinery operates. Practice and training will give you the unconscious familiarity you’ll need to survive a threat against your life, and those of your loved ones. Or give you the option to recognize you can extract everyone you care about safely without having to stop a foe using a deadly weapon.