1. Hurt your instructor feelings.
2. Damage your reputation as a person.
3. Lower your GPA.
4. Having to re-do an assignment.
5. Being placed on academic probation.
6. Make you less likely to do the work next time.
7. Losing the friendship and trust of the person you cheated off of.
8. Miss your opportunity to learn the course material.
9. Other classmates worked harder and received worse grades.