For all its flaws, I'd take a democracy over the Soviets in the 80s, or CCP/North Korea today. I can't imagine what the world would have looked like if the Soviets had won the cold war, or if the CCP wins the next.
Winning under MAD is moot. There undoubtedly will be losers at scale.
Historians differ if forcing the soviets to bankruptcy was necessarily better than a rapprochement. It worked, sure but like the end of ww1 gave birth to stab in the back rightist views of history, the FSU is now a kleptocracy and minor fights in Africa and the Middle east are now entrenched social cancers.
Afghanistan and the role of US funds to Pakistan on the region. Not a net benefit all told.
-John Kenneth Galbraith