I am so sorry for this. I will say, though that my opinion is that if it doesn't have anything to do with your son, then it's not something you can discuss with him because you are no longer married. And any opinions you have about who they have in their home, you kinda have to keep to yourself. In fact it would be better if you tried to not let it affect you at all.

As far as your son goes, he IS an adult and he can come to his own conclusions about what kind of father he has.

I agree with you on the seeming unfairness of the will, but again, that's an opinion and, from your ex's point of view, anything in a will is a gift, not a right. He can choose who he wants to leave it to.

I'm so sorry it's frustrating to you.