That is true. Gambling and Trading does not really offer a stable income most especially if the person doing it is just new in the field. However, in trading, the return would be very high if you just know what you are doing. But really people really differ from each other - there are people that feels comfortable working day job and some doing business. That is totally fine because after all, it would be impossible if all of us are businessmen or or all of are workers - there will be workers and there will be business people.
That trading should not be easily taken for granted. It is a gamble also. We should be careful in offering this to other person which might just jump into conclusions that there is much profit there which is safe. They might feel that they are scammed and stop from investing in bitcoin.