You say you are angry that he is leaving you with the child rearing, but when he offered his help when you were sick, you rejected his help. So you are actively discouraging him from stepping up and taking care of things.
Remember, detachment doesn't mean cold or distant. It means your emotions are not tied to what he does or doesn't do.
And I agree with hongaku. Asking him why he hates you is definitely pursuit.
Me: 44 H: 44 Kids: 20, 16, 16, and 10 Together/Married: 22 years H announced he was emotionally detached and considering D: 4/4/16 H announced he is going to try to stay and reconnect: 5/1/16