I'm a storyteller/builder, but not both at the same time as in that I rarely build for the story. I build more or less for fun and rarely play my builds. I also don't share everything that I create.
If I'm not storytelling, I'm playing a challenge. I play only one challenge however, as many of the challenges out there are nebulous nerdgasms rulewise and I like to play with some direction, but not with rules dreamed up by people that have no concept of balance.
http://forums.thesims.com/en_US/discussion/685716/the-going-solo-challenge-main-updated-to-include-ts4