Well, there's also the fact that Volapuk is rather hideous and imports most of the worst features of its source languages wholesale. Nouns and pronouns inflect

Well, there's also the fact that Volapuk is rather hideous and imports most of the worst features of its source languages wholesale. Nouns and pronouns inflect into multiple cases (genetive, dative, accusative...), verbs have literally thousands of conjugations, gender is retained, etc. Even Esperanto is often accused of Latin bias, but Volapuk takes this to a whole new (well, old) level.