The old testament is not a valid historical document. Also, it takes quite a bit of motivated reasoning to think that we are anywhere near pushing maximum human lifespans to 1000 or even 200. Not going to happen. Everyone reading this now will be dead and gone in no less than 115 years. Get over it. To return to the topic, though, the limit should be realistic for purposes of fraud detection. You wouldn't want families going on collecting great-great-grandma's pension long after she is dead. As others have pointed out, it is a design flaw that there is no way of handling edge cases with manual oversight, though.