For military combat, a handgun is an emergency weapon... close quarters self defense...
.38 spl snubs are called "belly guns".
Given a choice, I'll take my .30-30 carbine for SD,
but if push comes to in-my-face, the snub will do fine.
It seems to me that this thread is suffering from too much analysis of details.
Arguments have been advanced that revolvers are inferior because of
1) damaged cranes (when dropped or flicked), and 2) disabled cylinders.
Answer to 1: Don't "flick" a revolver closed like in the movies. Close it smoothly.
Answer 2: Don't let a bg close enough to grab a cylinder. Situational awareness.
In reality, in any situation, there are factors that could disable
both revolvers and semis.
Recommendation: Stop sweating the details.
Carry what
feels best to you,
study and understand it well,
practice with it diligently.
Chances are, you'll be fine.