The show began in 2004 and is set to conclude this year at the end of the sixth season.
And now co-creator Damon Lindelof has admitted that some of the past episodes weren't up to standard, and they didn't want to risk running out of ideas again by keeping the series going.
He tells The Hollywood Reporter, "Look, it would be nice to look back and say, 'We love every episode of Lost and every episode turned out the way we wanted it to'. There are s**tty episodes of Lost that we wish we had never written.
"But had we not written them we would be in a different situation now, because we ran out of ideas, we stalled, then the network realized what we had been saying from early on -- that Lost needed an end date.
"And now here we are six years later on broadcast with a show that is -- not what it once was (in the ratings) -- but still performing, and we're ending it on our own terms because we had s**tty episodes."
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