I fell down deep into the rabbit hole of Beziers in the Rhinoceros modelling app. There is something special about clean higher order curvature continuity across shapes. It's simply beautiful.

That said, I have big issues with learning any other tool. So much of the app interface learning was required to be able to freely draw... I really do see, why the bitmap simplicity wins over in "I just need to have it done; needs to be published by x" cases