Why did the dead bodies on everest not be taken away,and eventually became landmarks?

Anecdote

For those who climbing mount everest,there are many remains on mount everest has become a very important topic.At present,there are at least 100 dead bodies on everest,some of which have become "road signs" for later generations;however,it is very difficult to transport the remains from the top of mount everest,with a frozen body weighing 180 kg.In 1984,two Nepalese climbers still tried to transport the remains down the peak and lost their lives.