Amy Tan, Thomas Pynchon and yours truly have all worked as technical writers. I hated it and did it for way too long, but it paid well.
"Kurt Vonnegut described technical writers as '...trained to reveal almost nothing about themselves in their writing. This makes them freaks in the world of writers, since almost all of the other ink-stained wretches in that world reveal a lot about themselves to the reader.'"