A similar feeling (lack of emotions) happened to me, naturally as well.
I think it's great if you can control it and manipulate it to your advantage. The pros of this character are that you can have an objective perspective when dealing with people, which will help you achieve your goals faster than most will. You can judge a person, situation, or problem impartially, without getting involved personally and having to deal with emotions. This way, you can remove all the clutter that prevents you from reaching your goals.
The danger lies when you sometimes miss out on experiences that are crucial for your general fulfillment and well-being. What helped me was letting my emotions go wild in rare cases when they showed up. I would dwell on them instead of discarding them, analyzing them, and figuring out why I reacted the way I did. This helped me tremendously to develop self-assurance, acceptance, and introspection. But you can only get to experience those emotions through exposure to new things.
It's an arduous but very rewarding road.