Doesn't really answer my question - the advances in DNA have made it possible to put right miscarriages of justice and this is happening with more and more frequency.
People have been executed in the U.S. where DNA evidence could have saved them.
It is such a valuable resource in investigating crimes. Maybe knowing one's DNA is held on a database might put people off committing certain crimes.
I just think it is such a valuable resource that we should as a society be willing to be recorded.