I prefer gambling and trading, because both are quick ways to make a profit, and I really like these easy-to-understand ways to make money!
Real talk !
I thought campaign would be the most easiest one? Gambling and trading has resemblance, they both posess high level of risks, depends on your capital. Both could give you good returns if your lucky, yet both could lose all your invested capital in a day as well. Whereas, campaigns dont need any funds to invest, yet can make you good money. The only risk involve is not getting paid by the greedy manager.
Gambling and trading can only have resemblance if you are trading without a strategy and that is not just resemblance because trading without a strategy means you are gambling. As long as you are knowledgeable, you know what to always do at every point in time, then, you are better off as a trader than a gambler.
The mistake people make is that they tend to assume trading is just about buying and selling, but there are other decisions such as stopping loss, and managing your funds as a professional trader. Campaign is an easy area for anyone, but with trading you need to learn.
Mining requires huge fund, reliable and cheap electricity, so it is simply not for everyone, whereas gambling should not even be considered as any way to increase profit in the first place.