Yet there is something else that Nimoy brought to the character of Spock that made us admire him and want to emulate him: Bones might get defensive ("Damn it, Jim!") and Kirk might become enraged ("Khan!!!!") but Spock keeps his cool like a frickin' Buddhist monk no matter how violently he gets tossed around that bridge, and that is damned attractive. What angst-ridden, confused, questioning teen (or adult for that matter) wouldn't pay good latinum for that kind of quiet, assured self-control?
Beyond the mind melds and the nerve pinches and the superhuman strength and whatever other Übermensch powers he has, Spock is the one guy who always keeps his head when all around are losing theirs—except of course for that one episode where some dastardly villain literally steals his brain. Is he a little emotionally repressed? Sure he is. But no matter what happens, Spock is calm, relaxed, serene. That's what makes him so, yes, fascinating to watch. And that is why we love him.