[notthemessiah]

"Bed of roses" seems like a weird idiom because roses have thorns.

[raphaelss]

True. I did not think about it this way and just went with a common expression.

Feel free to read it as "Haskell isn't all sunshine and rainbows."

To be clear (before you say that "sunshine and rainbows" seems like a weird idiom because sunshine causes cancer), I meant that I think Haskell also has disadvantages.

[notthemessiah]

Makes more sense when you look into the etymology.

https://en.wiktionary.org/wiki/bed#Etymology

from Old English bedd (“bed, couch, resting-place; garden-bed, plot”)