It wasn't so much "inspiration" as a force. I just had to, ever since I was little. I would look at pictures and whole stories would bloom inside my brain.
Ever watch that movie "Blast from the Past", and Christopher Walken's character is trying to explain baseball? "Why does the runner go to first?" "Because he must." "But why?" "Because it's out there ..."
That's how I feel about writing. I do it because I must, because it's in me to do it, sometimes whether I like it or not.