Are there any absolutely cold-blooded people in the world?
No.
People will always be fettered by some things or people when they are alive. If such fetters affect life, or even the trajectory of life, then there is no doubt that what is more or less derived from those people or things is called emotion. There is no absolutely cold-blooded person in the world, but everyone will have an absolutely cold-blooded life, even if they are indifferent for a second, because the bond does not appear all the time.
And my emotions just come later than most people and go earlier than most people, that's all...