Perhaps a touch harsh I admit, but 'tis frustrating when one agree's to disagree (to each their own), but some people just can't accept that others differ in their opinion. Pointless wasting energy on such trivial matters.
run away from the aircraft and then presumably leave your 3 yr old child unattended by the side of the runway while you return to the aircraft to "secure the cabin and perform the checklist items per the POH ".......
Indeed I would leave him unattended by the side of the runway than stapped into an aircraft I don't trust laden with fuel.