See the problem is that you're cutting through peoples' property and this is wrong.  Why is this wrong?
People want to know whether they have to pay local/county taxes or not, and if their house straddles a boundary, well, this is really ambiguous.  So peoples properties will line up with admin boundaries.  A LOT of OSM's boundaries are clearly wrong as I see them drawn through properties leading to ambiguity when this should be the exception and not the rule...