Drinking is a vice which ultimately ruins a person.

Habit : a settled or regular tendency or practice, especially one that is hard to give up.
Crime : an action or omission which constitutes an offence and is punishable by law.
Sin : an immoral act considered to be a transgression against divine law.
Evil : profoundly immoral and wicked.
Vice : criminal activities involving prostitution, pornography, or drugs.

Synonym of Vice is Evil