Great point by Alaskan Danielle, almost forgot about it, subconsciously knew about this,
Forgot I was brainwashed into the single action pistol design(Hi Power/M1911A1) by the govmint. Double action in a life and death/badly injured situation, cannot be beat, hammerless(without the hammer exposed is great too), just point and shoot. Reason when I got exposed to the revolver(after I left the govmint, never before), I was like, WOW, no chambering a round in the breech, walking/riding around with my hammer on safety with a round chambered, waiting for an accidental discharge(AD) on govmint old rickety M1911's/new HiPower.
Main point:
Double action-just point and squeeze, round goes off.
Single action-rack a round into the chamber(hoping one is in there/with safety on), or racking the slide and chambering a round, but you got to practice this lotsa times(live ammo/caution), with the weapon you intend to use, too much work.