Tell me I'm being stupid

Someone needs to tell me to let go of the man I married even after he cheated on me multiple times. Ten years is hard to let go of but I am ready. I know I deserve better and really want to focus on myself and my children. I just can't seem to find the courage to let go of this toxicity even though I want to. I am scared.. I am going to miss the bond we have. I also know he is going to move on like nothing and I am afraid of that pain.

He has been showing me that he is changing but I feel like it is too late or only a matter of time until he cheats again. He begs me not to leave but keeps telling me not to cheat, which is annoying. When he gets mad he calls me a bitch which I absolutely hate. Why am I so weak? I am only 24 and I've had to put up with so much. It isn't worth it.