Frodo, you are partially incorrect. You focus again on the 'nice' rules for the slaves of Hebrew descent, but forget that there are no such rules for slaves of other origins. It was not that uncommon that kinsmen should be treated nicer, or not enslaved at all. Even in the middle ages the pope decreed that christians should not own other christians - and it had been quite an issue a long while before.
I find one person being owned by other people for the rest of his/her life not fair.
When we look at community serivce, there are several big difference with slavery:
1: Often there is some manner of agreement between the judge and the criminal here, before this punishment is dealt out. If the criminal does not agree to it, he is imprisoned.
2: The criminal is not owned by someone else.
3: The amount of time that should be worked is agreed on beforehand. The person does not have to keep working his whole life.
4: If the criminal has children, his children are not forces to work alongside of him. (while being a slave is inherited)
5: While there is a lot of grey area here, we could say that the criminal deserved it.
6: The criminal is not to be beaten when he perform badly.
7: The criminal can not be sold to another institution or person to work there.
8: The criminal retains his personal rights as a citizen.
enough arguments there?
I find one person being owned by other people for the rest of his/her life not fair.
When we look at community serivce, there are several big difference with slavery:
1: Often there is some manner of agreement between the judge and the criminal here, before this punishment is dealt out. If the criminal does not agree to it, he is imprisoned.
2: The criminal is not owned by someone else.
3: The amount of time that should be worked is agreed on beforehand. The person does not have to keep working his whole life.
4: If the criminal has children, his children are not forces to work alongside of him. (while being a slave is inherited)
5: While there is a lot of grey area here, we could say that the criminal deserved it.
6: The criminal is not to be beaten when he perform badly.
7: The criminal can not be sold to another institution or person to work there.
8: The criminal retains his personal rights as a citizen.
enough arguments there?

When I was a Christian, I was annoyed with dogmatic condescending Christians. Now that I'm an atheist, I'm annoyed with dogmatic condescending atheists. Just goes to prove that people are the same, regardless of what they do or don't believe.