Sentimental fallacy

Name of fallacy Sentimental fallacy
Type Irrelevant Argument, Informal Argument
Description An argument that concludes a premise (typically a belief) to be either true or false based on whether the premise leads to desirable or undesirable consequences.
FormIt would be more pleasant if; therefore it ought to be; therefore it is
Treatment Addressed by showing that deductive reasoning and experimental evidence is not affected by whether the premise leads to a desirable or undesirable consequences.