Is it just my Dom or Dominants in general or men in general...?

I am in a O/L relationship. My Dom has several health issues and has been in and out of the hospital several times in the past year. When he tells me he is ill, that is about all he says. I want details, all the gory stuff, what is going on, what are they doing about it, what are the long term implications.... He just doesn't like to talk about it.

He is like that about life in general. He is married and I very much respect that he protects his wife's privacy. However, he doesn't talk or complain about work either. He is not secretive. I know where he works and have verified online that it exists and even that he works there. He just doesn't share the details of his life. Yet, he seems interested and wants to know the details of my life. I am a very curious person and want to share his life as much as I share mine with him.

So, is this typical of Doms, men or is it just the type of person he is?