My cheating husband just inherited $3 million, should I still divorce him?

A scorned married woman asked the following question on social media. She said: My husband recently inherited a big sum of money when his father passed away. His father left 75% of his estate to my husband, which is worth around $3 million. My husband has been having an affair for some time now and I will confront him about it soon and, after that, I intend to divorce him.
What rights do I have to his inheritance? We have five children together and I went through a lot with him for many years and I want to punish him for going behind my back and having an affair.

I know I’m a bitter and scorned wife, but what are my rights with his inheritance? 

What do you think?