And French is not a "mere curiosity". It's the official language of 29 independent countries. It's also the second most employed language in diplomacy, being a working language of countless institutions, and the second most common mother-tongue in the EU. Not to mention that with the growing alphabetization of Africa, and its potential for economic and developmental growth, it could very well know a powerful rebirth in the near future.
It's true that French is not the easiest language to learn though, but if you don't find it very pretty that's your opinion, however it's really subjective.