David Hume förklarar i Enquiries Concerning the Human Understanding and Concerning the Principles of Morals varför han inte anser det vettigt:
And as every quality which is useful or agreeable to ourselves or others is, in common life, allowed to be a part of personal merit; so no other will ever be received, where men judge of things by their natural, unprejudiced reason, without the delusive glosses of superstition and false religion. Celibacy, fasting, penance, mortification, self-denial, humility, silence, solitude, and the whole train of monkish virtues; for what reason are they everywhere rejected by men of sense, but because they serve to no manner of purpose; neither advance a man’s fortune in the world, nor render him a more valuable member of society; neither qualify him for the entertainment of company, nor increase his power of self-enjoyment? We observe, on the contrary, that they cross all these desirable ends; stupify the understanding and harden the heart, obscure the fancy and sour the temper. We justly, therefore, transfer them to the opposite column, and place them in the catalogue of vices; nor has any superstition force sufficient among men of the world, to pervert entirely these natural sentiments. A gloomy, hair-brained enthusiast, after his death, may have a place in the calendar; but will scarcely ever be admitted, when alive, into intimacy and society, except by those who are as delirious and dismal as himself.
Jag instämmer förstås. Att förneka njutning och självförverkligande, i regel på religiös grund, kan alltså på intet sätt betraktas som dygder utan som laster. Sedan anser jag förvisso att människor ska få ägna sig åt laster om de så önskar, men det är inget jag rekommenderar.