Why are movies so long and expensive?

Do we really need everything to be a 3 hour blockbuster that costs $250,000,000 to make? I say no. Hollywood disagrees. Except for Avatar Studios. They know how to put out a good, reasonably non-bloated film.Topics:Andy saw Avatar Aang: The Last AirbenderMovies continue to be too longCarly Simon's numerous health issuesThe Rails to Trails paradeGabriel Langton almost broke his neck at the Commonwealth Games