From Thomas Sowell:

Make no mistake about it, letting old people die is a lot cheaper than spending the kind of money required to keep them alive and well. If a government-run medical system is going to save any serious amount of money, it is almost certain to do so by sacrificing the elderly.

Real compassion, as Sowell makes abundantly clear in the rest of the column, means spending time with the marginalized, not throwing government programs at them. Only real-live human beings can treat another as a person with dignity; institutions cannot and do not do that. And when we lose a sense of the individual person, systems and institutions will expect that burdensome people will have a duty to die.