Never quite got all the fuss about what was so wrong about this scheme and always thought the civil liberties issues were vastly over-exaggated by those opposed to it, helped by the likes of The Mail / The Sun, etc.
As already pointed out, the issue is not the ID card itself but rather the whacking big identity database underpinning it. As it happens I've held a simple ID card for my second country of citizenship for years and I have no problem with this.
The database aside, this all boils down to trust in the the Government. In my opinion the previous Labour Government had lost the plot and were rapidly becoming the "party of the jobsworth".
I could see the day under Labour where one would be routinely accosted while going about one's business by (police, PCSOs, council and Quango officials... [insert choice of jobsworth]) barking orders to the effect that you produce your ID card so they can "verify who you are".
Luckily the scheme has been scuttled for the time being. Should (God forbid) there there be another terrorist outrage then I'm sure it will be wheeled out again.