Hi Desiree - I loved developmental psychology even though I don't really use it in my job. You learn a great deal about some of the things you see every day. Here are a few examples, why is a kids head so big? Why is peek-a-boo so interesting to little kids? How come kids are completely happy to sit next to each other and play and then one day the need to interact with each other during play? These are all normal developmental issues. It becomes more interesting when you start to study abnormalities and situations that can hinder that normal development.
In the end, I couldn't work with kids...I didn't want it to seem like a job to me. Now, I work in advertising and study psychology from a different angle. Pretty interesting stuff thought.