Lets turn it around, do you support "euthanasia of economically useless people"? If you don't have a job for whatever reason, should you just be left on the streets to die?
(And if you argue: "we have social safety nets". Well duh. This would be one too. Except that it would be so much easier to administrate compared to something like welfare or food stamps, which has very high administrative overhead, so it would be cheaper than those systems.)
(And if you argue: "we have social safety nets". Well duh. This would be one too. Except that it would be so much easier to administrate compared to something like welfare or food stamps, which has very high administrative overhead, so it would be cheaper than those systems.)