I have lost small amount of bitcoin while playing dice and pachinko
but my biggest bitcoin loss is from altcoin investment

You cannot afford to jump directly in altcoin without having any knowledge, as there are many shitcoins available which will disappear within some hours.
yeah high risk if they have no knowledge of altcoin, but as far as I know the last few months when I invest in altcoin always beneficial, as Lisk, WAVES and last Stratis was almost 500% profit
