The purpose of the sanctions is not to prevent Ukrainians dying. It is to prevent Russia taking over Ukraine.
An obvious way to prevent both the collateral damage of sanctions and any Ukrainians (and Russians) dying from the war is for Ukraine to immediately and unconditionally surrender and for all its allies to support that. If saving lives is a reason to not impose sanctions, would you consider it also a reason to surrender to this and all other aggression?
The purpose of the sanctions is not to prevent Ukrainians dying. It is to prevent Russia taking over Ukraine.
An obvious way to prevent both the collateral damage of sanctions and any Ukrainians (and Russians) dying from the war is for Ukraine to immediately and unconditionally surrender and for all its allies to support that. If saving lives is a reason to not impose sanctions, would you consider it also a reason to surrender to this and all other aggression?