gambling
Share trading and bitcoin trading are both just forms of gambling - one the establishment approve of and one it doesn't.
I was angry enough about The Names being bailed out when Lloyds of London had a bad year (after years of raking in profits), but the bankers continuing to get bonuses after costing the taxpayers a fortune is beyond satire.
I certainly have no sympathy for anyone who loses their shirt playing around in the cryptocurrency markets.
(Pint icon 'cos I get thirsty after a wee rant)