If you do that,
1, Such behavior is criminal and subject to any applicable punishment by law;
2, You get a criminal history, that affects your future career and life.
3, You get huge trouble when you applying for mortgage, loan, financing your car, buying your home, buying car insurance....
4, If you were asked as a witness in the court for any legal case, the lawyer of the other party can dismiss your witness because of cheating history.
In conclusion, your rest of life may be surrounded by endless trouble, and you don't know when the next trouble will come!
Forget those cheating stuff... be a happy and honest person, and you find life is so lovely!