I do not care for the heroic couplet.
daDa-daDa-daDa-daDa-daDee,
daDa-daDa-daDa-daDa-daDee.
It’s fine for a short poem or sonnet, but when you stack one atop the other for stanza after stanza, it gets predictable, monotonous, and boring. It’s why A Midsummer Night’s Dream is my least favorite of Shakespeare’s plays, as a huge portion of it is written in heroic couplets.
What does this have to do with writing prose? Plenty.