Conversation so far:
What did Charles Baudelaire next worked on in his final years?
Baudelaire next worked on a translation and adaptation of Thomas De Quincey's Confessions of an English Opium Eater.
What was Charles Baudelaire next challenge after translation and adaptation of Thomas De Quincey's Confessions of an English Opium Eater?
Other works in the years that followed included Petits Poèmes en prose

Question: Why was this bad for him
Self-contained rewrite: Why was the translation and adaptation of Thomas De Quincey's Confessions of an English Opium Eater. Other works in the years that followed included Petits Poèmes en prose bad for Charles Baudelaire?