There are some good arguments for stand alone films. But very personally I prefer the franchises, sure the marvel series can be a bit overindulgent from time to time, but even moderation in moderation, eh? But come on, The Temple of Doom, Back to the future part II & III, Terminator 2, The Two Towers, Guardians of the Galaxy Vol. 2, the Even Star Trek Movies, almost every Rocky movie except the first, Shrek 2, Speed 2, we could go on for days but we don't have that kind of time. To get to the point, Sequels satisfy our longing for continuity, nostalgia, and transformation, offering familiar worlds where characters and communities evolve, reflecting life's cyclical nature, identity, and the search for meaning. Sure some people deride fan service, but let's not focus on the haters. I, for one, wholeheartedly endorse Mr. Cameron taking some time away from the Avatar universe and focus more on what the people are clamouring for: Titanic 2: Ship Happens.