A lot of people measure the M1/M2 carbine against a full power rifle,when it was actually designed to replace the pistol.
The Carbine round is a marginal killer at ranges over 100 yds,but it was a light,fast and handy weapon which was ideal for troops like arty gun numbers,combat engineers and others who served in a highly mechanised army. It was also a good piece for people who's needs were more along the lines of self-protection,like an infantry platoon comd burdened with maps and radios. In Korea it was well regarded for close in fighting,night fighting,patrolling etc where it could generate a lot of firepower at close range. It became quite popular with Cdn troops for these reasons and many "aquired" them in preference to their Lee-Enfields and "stench" guns.
It is an attractive piece. I got my first one back in 1965 and always found it a fun thing to shoot. Never contemplated taking it deer hunting though.