Cheating

Many people say, cheating in exam is the best way to get better grade than what we can achieved when we do it alone.
I really disagree with that. Cheating is the best way to embrace us. why? coz when we cheat, maybe we can achieve a good grade. people will say we are smart, intelligence, or maybe genius. But when people asking about a lesson (which we achieved good grade by cheating) and we can't answer it, it's really hurt.
I'm sure so many people will say, what I've written was garbage. but I'm really sure that many people agree with me. Do you??