Ending of a Marriage

Highschool sweethearts for 3 years then we took a break. Together 6 six years and now married for one year. He wants kids. I always thought I would want kids until recently I changed my mind. Now he wants a divorce over this. I am trying to be understanding of it all.

Update: I don't want at all.anymore.

He already has a son and I don't have any kids. Marriage is forever. I don't think ita right for him to leave over this because what if I am unable to have kids. Would it be okay for him to still end our marriage??