This guy has lost 103 bitcoins he mined back in 2011 and then lost his wallet dat file similar to what I have done but wow this guy must be gutted the amount of money he has lost compared to me
His Address 166BuLPWHUjqoqiYp5rGE3B5r5AmqgHpoL Final Balance 103.20832384 BTC
So many people have the same problem and I wonder just how much Bitcoin is stuck not being able to be used

He says "I used to mine Bitcoin back in 2011 and I lost my wallet.dat file (through several stupid moves on my part). It's got approx 103 BTC in it, anyone is welcome to it, I've given up trying."
To our understanding, these 'lost' coins are part of the original plan for bitcoin. Part of the scarcity built into the system, the "diminishing supply", is due to the fact that user error will render some percentage of coins unable to be used. Effectively, they will be removed from the economy, but only for a time. These coins will be retrievable in the age of quantum computing, where these older wallets will be subject to penetration.