Adoption?

My spouse and I were discussing our future when the topic of children came around. I told him I dont mind adoption but I would like to have at least one child be biologically mine. He does not want biological children and does not understand why I do so bad. He would rather adopt, which I am fine with, I want to be a foster mom someday anyways but I want to go through the experience of having a baby at least once in my life. Does that make me selfish? When I tired explaining the deeper emotional bond he cut me off and asked why it would matter. I dont know what to do. I thought we were on the same page about our future together. He doesnt seem to understand how I feel about this no matter how I try to explain it. 😔😔😔