I can bet my all bugs on this that no one takes trading as a fun or trade with coins because it feels like gaming. Trading cannot be done without good knowledge of coins in a successful manner. Whosoever takes it serious work hard to understand graphs in a good way and make wise moves at right time? In short, as you said trading deals with money ultimately so no one is going to take it light in any way.
Yes agree with you mate, i believe most people take trading as serious job where they put their life on top of trading. Because many people just get income only from trading. Imagine how if we think trading is game? It mean they play their life on top. Not reliable.