This is the best way now of earning money.Bitcoin can earn a big profit through you transaction you make.That if you have patience working on it you can have the price increasing of bitcoin.
although the fastest way through which one can earn bitcoin is gambling, , in gambling one has best option to earn the fastest money that one can =even imagine through any other way, but in fact gambling is also one of the most risky way of making money, therefore I thin we should compromise on trading, as trading is also the best way of making money.