I for one most certainly do - because, depending of course on the drawing subject, it's a lot easier to edit vectorized shapes than raster images.Who cares for vectors at 67 mega pixel drawings?
why is it suddenly vector vs raster? Both have different use case. It's like saying a hammer is a much better tool than a saw, which is silly.
I use both Procreate and Idraw (now Graphic) on the iPad for it's different intended purpose.