Your first Bitcoin use case?

Missing the opportunity to sell in the right moment.

ArrayIndexOutOfBoundsException

Arma2 with all the expansions

Mined around 10 btc early in the day when it was worth nothing, and then forgot about the whole thing. Never even bothered looking for that wallet since I know for sure it wouldn't have survived several selective moves from HDD to HDD to SSD and so on.

Don't care. I hope BTC dies, dragging down all other bullcrap blockchain currencies, so that people stop wasting a country's supply of electricity on "mining", while inflating all hardware prices to double their MSRP.

@irene well there will surely be a ton of crappy used GPUs at low prices. But at least this mining thing won't further influence prices.