Do not marry this man. Do not have children with this man.
What shines out from your OP is that he is only willing to accept that things are real, if he knows about them, preferably has experienced them, himself. For him, your life experience, your hard-won knowledge, your testimony, are worthless.
Think about that. You and everything you do, see, know and feel, are irrelevant, of no consequence, not actually real, to him or in your relationship, unless he says they are.
Someone who sees himself and his relationship to the world and other people that way, is incapable of love. He can feel fond of you, like a pet, a useful friend. He does not have the mantal or emotional equipment to love you for you, as a separate person who is different form him, yet equally, even more valuable.
He will never see you that way. You are merely an adjunct to his life. An affectionate convenience.
Oh and his default position is that everything you do, feel and experience is less than him and his knowledge and experience.
That is your life, if you stay with this terminally limited little man.