One needs to answer to those one is appointed to serve.
By this, a politician and government official serving The People need to answer and be transparent to The People.
A business needs to answer and be transparent to its shareholders, employees and clients.
A family member needs to answer to the other family members. A family transparent to itself is a Good Thing.
I need to answer to me. Me being self-transparent is a matter of personal integrity.
This gives the gradients of transparency and privacy.
And of course, a politician is only a politician when he does politics.
When he is in the bathroom, he is private (and answers to himself).