Does it surprise you that he would give up joint custody without a fight? Without knowing him or you my gut reaction is that someone who doesn’t fight for the right to share in raising their child shouldn’t have custody. That doesn’t mean he won’t have visitation, as much as you both agree on. But full custody can give you legal control to make all decisions for your child. You know him and what kind of Dad he is, make the decision based on what’s best for your child even if it’s scary. Both scenarios are scary for you in different ways.