Umm, why couldn't I? If we don't think of suicides or drink driving as a moral wrong (we could call this idea "sin"), why couldn't we let people do whatever the

Umm, why couldn't I? If we don't think of suicides or drink driving as a moral wrong (we could call this idea "sin"), why couldn't we let people do whatever they want, up to allowing them to end their lives - as long as people are not hurting others? The externalities are a problem but not as big as we perceive.