What's the purpose of alcohol? Drukenness.
What's the purpose of ice cream? Gluttony.
What's the purpose of a living room couch? Slothfulness.
What's the purpose of a vacation? Laziness.
This is the kind of logic which is applied to MJ and it leads to the heresies of Jansenism and Manichaeism, which is the error that natural things all lead to sin and temporal things are inherently wrong.