I'm a bit torn on this. We're all dependent on other people one way or another. Individuals with Downs are more dependent, but it's a spectrum and they can still have meaningful lives. Meanwhile healty "independent" individuals can live entirely tragic and arguably pointless lives devoid of love and filled with anger.

That said, I'm still pro screening for Downs in fetuses. What I'm trying to say is that I'd do the screening for me as the parent. Not for the person to be born.