Again, you're very good at making me laugh. Your logic is as bad as your grammar.
According to your post, there is nothing wrong with a shoplifter stealing because he has done it before. There is nothing wrong with cheating because someone, somewhere, has done it before.
Also, according to your logic: I have assaulted someone. Therefore, I should not criticise you for doing the same.
False - assaulting someone is wrong, whether or not it has been done before. The fact that I may have assaulted someone in the past does not make my criticism any less legitimate.
I'll make it simpler for you. How about: I have made a mistake before. Therefore, I should not criticise you for the same mistake.
All false, of course. Your logic is like swiss cheese.
Me: 3
You: 0