Identity Crisis after getting Married

I recently got married, and the time has come for me to change my name (where I live, you have 90 days after your marriage certificate is issued to change your name for free, after that there are all sorts of fees).

Before we got married, we discussed my name change, and I decided I would take his last name, but also keep my own (two surnames). I suggested that he take my last name as a second middle name (so that we would both go through the process together and to keep things even), but he flat out refused, no discussion. He wants me to take his name and drop mine, it took months for me to convince him of why I want to have both. We both have strong family heritage associated with our names, and his family owns a business with their name on it. He feels that because I'm not just taking his name, it means I'm not really committed to him; yet when I pointed out the reverse, he didn't see any issue.

After we got married, I've been called Mrs [his name] a few times and I hate it. I'm now having a full blown identity crisis over it. When I see my 'married name', I don't identify with it, it isn't me. I'm now not sure that I should legally change it, if I'm having such a hard time with it.

Thoughts? Please help.