Are you a sex addict because you like to have sex?
No, that just means you like it. But you can still control yourself. I know a sex addict. They have trouble to stop thinking about it and are easily reminded.
Just liking sex doesn't make you a sex addict. What makes it an addiction, is if it is interfering with your ability to maintain normal healthy relationships, or is causing you problems in your life.
There'd be a problem for anybody who didn't want to have sex.If you wanted to have it repeatedly and at inappropriate times that'd be a step toward addiction.If you gave in to those repeated and inappropriate urges you might even go blind.