Originally Posted by Empty Cruise
On the other hand - even if you bungle the reject and run over at 20 kts.
With a bungled reject, is it actually very probable?
At 20 knots, an aircraft with good braking should be able to stop in less than 20 metres. With poorer circumstances like ice or hydroplaning, this could take longer, but still... an aircraft might come to full stop "five feet" or so before an obstacle, as in the (fictional!) Airport, but it is much more likely either to stop completely hundreds of metres before the end - or far after the end.
So, the consequences of overrun at high speed are not always trivial.
On the other hand, finding the craft unflyable is still worse.
Also, an aircraft at V1 in runway-limited load has spent around 60 % of runway and only 40 % is left for stopping. An aircraft which lands has about 100 %. But continuing a takeoff with flyable craft may be setting up the need to perform an overweight landing...