I have a mea culpa. A few months ago I blamed the 80s Star Trek for changing Vulcans to make them humans with control issues.
Turns out its actually an episode of The Animated series, "Yesteryear", where its explicitly stated all Vulcans train to suppress their emotions for sociological reasons. Been awhile since I'd seen TAS, and had forgotten this point.
Still think it was a bad move for Vulcans in ST as it seems to have made loosing control the only story you can tell with them (something originally unique to Spock), but I can't blame Sybok and TNG's portrayal of Sarek any longer.
Meanwhile, just got into the Ro Lauren story on TNG.