Infertile fiancé

Recently we found out my fiances sperm was dead.. at first I wanted to adopt kids then I started thinking about artificial insemination.. I brought it up today and he totally flipped out and said he would end up resenting the kids because it isn't is.. and that I should just go find someone that can have kids, leaving me heartbroken. Is anyone in the same boat as me? I don't have anyone to talk to about it. I understand he want kids of his own and it would hurt him.. so am I wrong for being sad? We had been trying for 4 years to have a kid of our own and finally went and got his sperm tested, I understand his heart break. Am I being selfish ?..