My husband and I have been married for a little over 5 months. Before we got married I wanted us to exchange passwords for our emails because that's the way I had it in my old relationship and I thought it was a normal thing to do. My husband, however, refused to give me his password because his email was 'none of my business' and i wasn't 'even his wife' yet. I knew he was a very private person so I decided to drop the subject until we get married.
Now we are married and the other day I asked him if he would give me his password (Of course, I'll give him mine as well) and he still refuses to do it!

His reasons are: he doesn't trust me because if I want to read his email I'm up to no good, there may be private information from his friends and family that nobody but him is supposed to know and i'd be violating their trust if i read it and also i speak another language and some of my friends write in that language and he thinks it's not fair that i can read his emails and he can't read mine.
In my opinion, married people shouldn't protect each other FROM each other with passwords. Am I wrong to think so or is he wrong?