The Body Of Caesar

Very often Christians seem to view the State as the Body of Christ, the earthly emanation of the Kingdom of Heaven.
They are such enthusiastic supporters of Caesar that they campaign to fill his coffers with ever more power expropriated through ever more taxation. With its great wealth, the State will provide more 'services', they say. They claim that Caesar will provide more 'Aid' to the destitute, the sick and the lame, though the 'Aid' usually flows through the hands of Caesar's friends, often sticking to the palms of their hands on the way.
Yes, Christians lobby for Caesar to give more 'Aid', and to be given more 'aid' from the taxpayer.
For them the State is a good thing despite its history of war and violence, mass murder, torture. Yet the British state does not even pretend to be Christian any more, openly working for the destruction of the family, society and the gift economy, marginalizing Christians at every turn.
More tax means more bombs, more wars, more weapons contracts and so on. The British State openly supports those who are wiping out Christians in Iraq and Syria.
Indeed, as I write, the British state is planning to wage war upon Syria's Christians.
The evidence that the State is the work of the Devil is so obvious, then so why are Christians so keen on the State?
When tempted Jesus was offered earthly power, the kingdoms of this world, by the Devil, so why do Christians support political power?
Is it that many of them don't really worship Christ at all, but rather, they really worship authority? Are they semi Muslims, yearning for a Christian umma?
At best the state is a necessary evil. But today's 'New Testament Christians' are merely bureaucrats with slightly higher standards than others.
Christians see autonomy as 'greed', initiative as 'unfair'. They approve of the division of society between the official carers (CRB checked) and the uncaring. They support the separation of the powerful from the powerless. They want to be Caesar's special policemen.