Personally, I am all for the death penalty.
These days forensic science is at the stage that the possibilities
of convicting someone who is not guilty are next to nothing,
in cases like Dahlmer or Nelson (here in the UK) there was so much
evidence against them, that there was absolutely no doubt as to their guilt.

Many have said that the courts ordering the death of an individual
is morally wrong and reduces the judicial system down to the level of the criminal,
which is a fair point, but I can see no benefit from keeping mass murderers,
persistent rapists or child molesters alive. The duty of a court in any land is
to make that country a nicer and better place to live, anyone who says society
would be a better place for keeping these type of people alive should perhaps try
to see things from the relative of the dead persons perspective.

In the UK we do not have the death penalty, but if we did and I was so unfortunate
as to have a family member or friend killed by a mass murderer - or similar (heaven forbid),
then I would have absolutely no qualms in being at that persons death. Taking these
peoples lives wont bring back the lost ones, I doubt it would even help the grieving
process, but it will ensure that criminals dont get to spend the rest of their lives in nice
warm cells watching TV at the expense of the tax payer all the while knowing that
their lives will be provided for forever. They lost their rights to be treated as human
beings when they decided to act like animals.