Infinite Variation

Do we really need a Carrie musical?  Especially given that it's been tried--and failed--before? Does everything need to be spun off into multiple permutations of itself?  I realize I am a cranky old person who is raining on the parades of people who like cheerful song montages.  But I'd really rather see original stories than movies, and musicals, and novels ripping each other off in infinite succession, unless there's a clear artistic rationale for the translation.