Why shouldn't I take revenge on a cheater?

Long story short, an ex cheated on me a few years ago. Messaged me a few months back, rubbed it in again. Originally I had left her alone and went my own way. But yeah, these days I'm thinking of revenge. I study Cyber Security and can hack most systems and do things digitally (and I'm guessing you know how far I can destroy someone with that) so yeah. Why shouldn't I take revenge on a cheater? It is not like they don't deserve it.
Why shouldn't I take revenge on a cheater?
Post Opinion