How about "all of the above". If I had to chose one I would have said accuracy not that long ago but for a while my CZ 75B was more accurate than my revolvers so I know an auto can be plenty accurate (my 6" 586 that I have now is more accurate than the CZ but in all fairness it does beat the CZ by over an inch in barrel length). Ergonomics- revolvers can have the grip size and even shape almost completely changed w/ a new set of grips, try that in an auto. Power, yeah they got .50AE, .44mag and .357mag autos but I'd love to see them try to chamber one in .454 or even .480Ruger one of these days. Reliability- sure many autos are great, but still they can't do what most revolvers would and if a revolver does fail to fire just pull the trigger. However, my vote, if I had to chose one, is with simplicity. No worries about what condition it is in, no need to check to see if a round is chambered, no need to worry about whether the springs are worn out from being loaded too long, no need to try to remember to turn the safety off (yeah, we are sure we'll remember, but what about with the adreneline pumping w/ an armed BG entering your bedroom), only one type of trigger pull to worry about (yeah, I know there are SA and DAO autos, but many are the DA/SA variety)- priceless for new shooters or if you are woken up by an intruder at 3am.