How important is it for you to make physical contact when showing affection for someone?

It’s not important to me. I am not a touchy person in general. I enjoy it, but only if I am close to and have affection for the person and I know they want me to touch them.
I have a lot of affection for both my sister and my niece, but I would never hug my sister because she’s never given any indication she wants me to, while I hug my niece every time I see her because I know she wants a hug