On the surface, I think it looks merely like a slam on doomsday-preaching religious zealots, but it's deeper than just religion. The line "The missionaries tell us we will be left behind" seems to be talking about the general alarmist-type fears people have every time the future looks bleak. "Been left behind a thousand times, a thousand times" seems to show that this fear is pointless, since, looking back on all the horrors humanity has gone through, somehow or other we will always come out alive.
On the surface, I think it looks merely like a slam on doomsday-preaching religious zealots, but it's deeper than just religion. The line "The missionaries tell us we will be left behind" seems to be talking about the general alarmist-type fears people have every time the future looks bleak. "Been left behind a thousand times, a thousand times" seems to show that this fear is pointless, since, looking back on all the horrors humanity has gone through, somehow or other we will always come out alive.