I wonder what the best approximation is for the total bitcoins that are lost forever...

hussamfyi

To put things in perspective, this person sent 

bitcoin

There are at least 3,034 bitcoins certainly lost forever as of 2022

nullama

This number is really low. 

To put things in perspective, this person sent [7,500 bitcoins to a landfill](https://www.independent.co.uk/tech/bitcoin-value-james-howells-newport-landfill-hard-drive-campbell-simpson-laszlo-hanyecz-a8091371.html) and [this one threw away 1,400](https://www.gizmodo.com.au/2017/05/i-threw-away-4-8-million-in-bitcoin/)