Worse directly because of South Africa and Rhodesia, actually.
I’ve bolded where you’ve gone wrong. America didn’t have to deal with anyone. And even if you deal with someone, you can do so while demanding they make changes (like post-Reagan-veto-override USA) and not selling the oppressors weapons nor sending in the CIA.
Ideally, the West would have used the Korean War to peel China away from the Soviets. But that sort of thinking ignores the power of the China Lobby, a group that did much harm to the US.
Fair enough as far as you are concerned. The US fight against communism also recruited other people and factions with other motives, such as profit and power. To describe US misbehavior during the past 65 years as only anti communist overlooks the fact that prior to WWII and prior to the founding of the Soviet Union we did all of those things you decry and worse. Those activities continued and continued under the additional cover of containment, but the policy of containment did not require them.
One must direct the question at at least three areas:
military
economic
geopolitical
(1) Military success. There’s been no general regional war for 66 years. This record has been surpassed, IIRC, only by Pax Brittanica and Pax Romana. This is due to Cold War politics and the presence of nuclear WMDs. There were several minor wars of impact, e.g. Korea - good idea, Vietnam - bad, Iraq - mistakes.
(2) Economically good until the 70’s. I won’t quibble with TriPolar’s comment. Economically it should be pointed out that U.S. propping of Pinochet, Shah Pahlavi, etc. is Good for Americans, esp. the greedy rich ones. Frankly, dictators friendly to U.S. are often better for America and for world peace, at least in short- to medium-term, than conceding political freedom to uneducated, easily gulled masses.
(3) Truman and Eisenhower made, overall, sound, prudent decisions. Kennedy and Johnson made, IMO, big mistakes, especially in Vietnam. (Until OP should split this into two or more threads, set aside remarks on post-Johnson Presses.)
There were some other great heroes of that era, e.g. Dean Acheson, George Marshall, and especially Harry S Truman.