Disagree all you want, but Greg's right and you're wrong.
At the risk of beating a dead sehlat, I have to ask: If Spock was always meant to be nothing but the embodiment of science and logic, and purely alien to boot,
why did Roddenberry make him half-human to begin with?
Because, of course, a certain degree of internal conflict was cleverly built into his character from the beginning. Now people may dismiss that as "angst" or "touchy-feely" or whatever, but the guy who broke down in tears in "The Naked Time" because he could never tell his mother he loved her has always been a little bit "emo." It's a fundamental aspect of his character--and always has been.
And that's what makes him more intriguing than a purely cerebral thinking machine . . . . IMHO, naturally.