Doughnut Lollipop 【記録係】
Perfectionists when they meet the Nirvana fallacy. 
The nirvana fallacy is the informal fallacy of comparing actual things with unrealistic, idealized alternatives. It can also refer to the tendency to assume there is a perfect solution to a particular problem. A closely related concept is the "perfect solution fallacy".
By creating a false dichotomy that presents one option which is obviously advantageous—while at the same time being completely unrealistic—a person using the nirvana fallacy can attack any opposing idea because it is imperfect. Under this fallacy, the choice is not between real world solutions; it is, rather, a choice between one realistic achievable possibility and another unrealistic solution that could in some way be "better".
It is also related to the appeal to purity fallacy where the person rejects all criticism on basis of it being applied to a non ideal case.
History
In La Bégueule (1772), Voltaire wrote Le mieux est l'ennemi du bien, which is often translated as "The perfect is the enemy of the good" (literally: "The best is the enemy of the good").
The nirvana fallacy was given its name by economist Harold Demsetz in 1969, who said:
The view that now pervades much public policy economics implicitly presents the relevant choice as between an ideal norm and an existing "imperfect" institutional arrangement. This nirvana approach differs considerably from a comparative institution approach in which the relevant choice is between alternative real institutional arrangements.