You need to associate with people that inspire you, people that challenge you to rise higher, people that make you better. Don"t waste your valuable time with people that are not adding to your growth. Your destiny is too important.
The more people rationalize cheating, the more it becomes a culture of dishonesty. And that can become a vicious, downward cycle. Because suddenly, if everyone else is cheating, you feel a need to cheat, too.