A necessary corrective to the faintly puerile excesses of Enlightenment thought, the progenitor of many excellent artistic and literary movements, and more important to the early development of socialism than it is often given credit for, although the potential and in some cases actual problems are obvious.
Certainly that is true, though socialism-as-writ was completely at odds with romanticism when it became a force at the turn of the last century. Romanticism did however provide a perfect framework for some of the most odious forms of early to mid 20th century nationalism.
That's the potential and in too many cases actual problem that's most obvious, yes.
Not a fan, Enlightenment is more of my kind of thing.
And 19th Century Realism/Naturalism
Realism and Naturalism were necessary correctives to the more than faintly puerile excesses of Romantic thought.