Earlier quoted context omitted.
So, the same reason we can't have the convenience of pre-filled tax returns from the IRS? People need to be able to feel the pain of the taxes they pay, because it might help bring them closer to the ideological conservative viewpoint.
Why would ensuring people know how much they are paying in taxes be a bad thing?
2) Surveys about understanding of how taxes work, of personal or typical tax burden, and even about whether a given individual believes they were affected by some new high-profile tax law or other (versus whether they actually were...) demonstrate pretty damn conclusively that this approach has entirely failed, anyway.