Amy Sherman-Palladino, the creator of Gilmore Girls, left the show before its seventh and final-ish season (she returned for the revival miniseries on Netflix). The reason she and her husband Daniel Palladino (executive producer and writer for the series) exited the show was left up to the rumor mill for a while, with many calling it a salary dispute.
Dan and Amy sat down with Entertainment Weekly to clarify why they left. Dan said:
"We’ve been working for the last two years with one-year contracts, working seven days a week for the past six years, and we wanted not a two-year pickup for the show, but a two-year contract for us, so we could relax a little bit and not just think 300 days at a time, always wondering whether we’d be here. And we hit a brick wall with that, and also with our request for more personnel, more writers, a staff director for the [stage set] so that we didn’t personally have to go down on the set and oversee the directors and make sure the knickknacks were on the right shelf at Lorelai’s inn. So, last Thursday, when we saw none of that was coming together, we made our decision [to leave]."
"We went to the studio around the Christmas holiday and said, 'Here’s what we’re looking for, and let’s talk now before the season ends and things get crazy with [your] attention distracted by fall pilot development,' but we got frozen out. It was like Footloose, when they’re revvin’ up the tractors, playin’ chicken. It took too long, and before everyone knew it, we were loading our desks on a truck and driving off the lot."