As a child I wrote horror, tragedy, and adventure novels. As a teen, I wrote some weird mix of romance and erotica with odd storylines (detailing affairs or other taboos) and hardcore naughty scenes. As an adult (20s and 30s), I write dystopian, fantasy, and sci-fi novels with a focus on bloody large-scale warfare and conquest.
I have a while yet to see where I go from here, but I'm not sure if the change in genres is age related or not. I've always had a love of tragedy in storytelling, detailed violence/gore, and putting my characters tough situations that would cause many real people to lose their minds. That detail hasn't changed about my writing since I was a kid. I'm really impressed with what I managed to pull off in the horror books I wrote in elementary school (I read them now and think, "what was wrong with me?" Ha!). What I write tends to correlate with my mindset and lifestyle at the time, I think. I'm usually an annoyingly happy person, so I'm intrigued by misfortune and violence and love to write it. As for the romance/erotica as a teen, that was probably just because my drive was through the roof and I wasn't getting any, hence why it stopped once I met my husband. :evil: