Libra+Capricorn

im a Libra & my bf is a capricorn. As a person, he's great. He always makes sure im okay & we laugh A LOT. The thing that is making me question us tho is that im a Libra & a more open-minded, free-spirited, out in space type of personality whereas he's more of a down-to-earth, practical person. I don't like when I'm passionately speaking about a theory or something unorthodox & he just says "I don't believe in that"

it makes me feel like there's no point in talking to him cause he'll always disregard what I say or find a logical/practical reasoning to it. I feel discouraged & not sure if I'm just making a big deal of nothing.. what to do guys think