Ahhhh, thank you for explaining more. I still think you deserve to be treated better than he treats/talks to you. You are such a nice person, interesting and so capable I don't think you going to be living with him or anywhere near his manipulation could ever be positive for you.
If you don't want to travel then don't love. Or if you want to travel elsewhere then do that! You don't owe him or your half-sister anything....