Why do people perceive smth as okay as long as they do it but as bad as soon as someone else close to them is doing it?

Question

E.g getting drunk

In: Culture

Answer 1

A lot of people are hypocritical and/or hold themselves above others. In their mind they explain it to themselves as “Well I only did it x amount of times” or “I rarely do that” or they’ll think they are the except to their own rule