I still don't get the point of 300 blackout

[Tony2X]

How quiet do those get?

Whatever you shoot with it will be too dead to worry bout how loud it was.

 

[ReganR6]

Whatever you shoot with it will be too dead to worry bout how loud it was.

I'd rather not go deaf for the rest of my life because a round was "too expensive" for my wallet to handle.

 

[Fatal_Bert]

Suppressed or not what round preforms better out of a SBR or AR pistol, and uses all the same common parts and magazines?