I can understand French and German. I will never be able to speak French without offending the ears of natives. German I might do better in with another 10 year

I can understand French and German. I will never be able to speak French without offending the ears of natives. German I might do better in with another 10 years, that will be about 20 years of being an annoying drain on the culture.. A bit like a second childhood. In Esperanto, it's about 3 months to get to not terrible for native speakers (yes there are native speakers) and a year or two to be quite good, maybe as annoying as your typical undergraduate to the top level of translators, authors, etc.