The problem is (and lets not get into another debate about this) but prisons are flawed, they should produce money, not spend it. Death penalty obviously should be for some cases, but when they are proved guilty beyond all reasonable doubt and their crime is past a certain line, killing them should be pretty quick and really not cost anything..
Therefore with changes your statement would be wrong and therefore you cant argue it, sure its true right now but it can be changed, so basically im expecting an argument which is based around ethics ?
Hell !!! If you want to stick to your argument, im sure there are rich people all over the world who would come forward and pay all costs for killing him if you give them the option