It's pretty hard to win a war after it turns into a brutal stalemate, and unfortunately brutal stalemates are the worst kind of war when it comes to civilian casualties. Much could have been avoided had the Chinese not entered on the North Korean side of the war, or if North Korea hadn't tried to invade South Korea in the first place.
South Korea was the aggressor. Syngman Rhee, the leader of SK at the time, was the US' main dude over there. he was also the major war monger
You're not going to convince anyone of this drivel. I doubt you've even convinced yourself.
I'm not going to touch the "South Korea was the real aggressor" thing, but it is worth noting that Syngman Rhee was very much not a great dude and that his government killed a fuckton of people ---