I've tried to keep this subthread on topic, but our interaction is rapidly descending into a which is better debate. Unless you think that Perl would benefit from the addition of a monad-like mechanism, I think we are probably done?
I didn't get the feeling I was saying Haskell's better; I was merely trying to give meaning as to what's good about (an aspect of) it. I kinda like Perl, myself! And no, I wan't saying Perl needed monads anywhere. So sure, if there was a debate aspect to this conversation, I suppose we could wrap it up.
I have to say I felt mentioning Quantum::Superpositions here was something of a strawman. Or even, two strawmen. "It's just a bunch of loops" smells like the notorious expression "It's just a way to arrange JMPs". There's expressive power offered here, even if the implementation emulates something using loops. And secondly, presumably once the technology arrives whence the module got its name and inspiration, the implementation would cease to be an emulation, and the operations would become primitives. But we can drop this too...