I guess I've always really wanted to create places and spaces you can explore. A lot of my games are just walking around places and exploring. As a kid my favourite games were ones with level editors. I used to spend hours attempting to make mazes or mountains or whatever I saw in my head in games like Tony Hawks, Age of the Empires, Sim City, Rollercoaster Tycoon, etc...
I'm also interested in story but I'm not great at it so I like to try evoke feelings through the composition of spaces.
Some day I want to make a game with a meaningful story. But until that day I'm happy to experiment and try different ideas.