Rick and Morty creators held out until Adult Swim gave them "many, many, many more seasons"

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In a GQ profile of co-creator Dan Harmon, he and fellow co-creator Justin Roiland explain why the renewal took so long. Roiland said they held out for up to seven seasons' worth of episodes for their own state of mind -- so that Harmon “doesn't have to take 12 other jobs while we're working on season four." That way, Harmon could give the show the attention it deserves. ALSO: Roiland says Harmon and Rick are starting to merge in his mind.