Interesting topic.....
I've been questioned by new or novice shooters in this regard, with the newcomers...upon hearing my encouragement toward the wheelgun...stating that many "modern" semi's
don't have "safeties"...so why limit one's self unnecessarily, particularly in terms of mag capacity and "overall cool!"
My reply is that the revolver, in my opinion, has SEVERAL safeties...eliciting the response of "what do you mean?". My reply is that the safeties are not so much mechanical as they are psychological and are triggered visually. The first and probably most significant is the cylinder movement...pulled DA or cocked SA. When the shooter sees this, he/she knows something is happening or about to happen! Moreover, the shooter very frequently sees the edge of the case rims..."telling" him or her that the thing is LOADED and so when the cylinder moves the thing is probably gonna go 'Boom!"...and, unless the weapon is hammerless, there is the rearward movement of the hammer also.
Given that the shooter is reasonably awake and alert then, these visual "warning signs" or "safeties" usually are sufficient to cause the mental alarm bells to sound ( most of the time! ). It also reminds the shooter of the relationship of pulling the trigger ( initiating the firing cycle ) to the movement of that cylinder ( cause n' effect) being a necessary requisite for the firing of the thing ( placing the round in a position wherein it might be discharged ).
It is also pointed out that...particularly on the striker-fired autos...there are none of these things!!
In my experience anyway...most new shooters understand and like the explanation, and frequently start out with a wheelgun...at least until he or she "grows" as a shooter in both skill and confidence...