That's true, but trains can get expensive as well, but its a hobby that has been long established i mean years and years compared to mining, I think some are in it for the money, and with more people getting involved the difficulty increases meaning for some people they have spend more to make more. For that reason I can see why they may be some. But I think the majority are concerned that people are letting themselves in for more than they bargained for. However I feel that perhaps if every one was just mining purely for hobby and not for profit, I think that some of the bigger machines would not be needed and the difficulty would decrease but such is the way of the world