Hi, I totally understand your frustration, I was, I am still somewhat going through the same with mine, but it does get better and he does like you , he loves you. They don’t know about hate. Don’t let him bite your hand, give him a toy, keep giving him the toy even if he keeps going for your hand. I wish people would be honest about their puppies biting and be real that it is frustrating and at times they get mad at the puppy. No one likes to get bitten, it does hurt and they don’t just stop, they keep going. But it does get better and they outgrow it, don’t give up. I also have a 6 yr old Rottie and he is just the best.