Its not greedy, its investing.  You have to leave all that stuff behind and try to make money.  I wish there was no poverty etc in the world, but in the mean time I gotta pay the rent.  I would like to buy a house but the market is nuts right now so I will have to wait.If you have invested huge amount and bitcoin course falls before you sold your bitcoins, then of course it`s will be huge loss, and if investment amount was small, then you can take a chance.