I disagree, for plenty people the bad they do outweights the good by far, the terroristic attacks in europe for example are proof of this. From a poetic or idialistic point of view you might want to believe that humans are driven by kindness, love and compassion but in real life it's not all rainbows and unicorns. The drive for many people is their greed for power and all concepts (money, deception etc.) that helps gaining more of it(this might vary per individual but looking at the mass it's correct). The way people behave ingame is a reflection of their true nature (beside trolls and giggles), if they have no problem scamming people then their moral compass is pretty f*ked up.
''It feels like people will take good actions for granted, but never forget one bad one'' This is a psychological concept that's proven, it takes about 3 good actions to make up for one bad one(this is not EXACT ofcourse) this is concluding from B.F. Skinners research on behaviorism (pos/neg reinforcers). But in this case it's not just about reinforcers it's about literally stealing stuff which is, if encountered in real life something that could make you end up in jail, and you wonder why the ''negative'' things are remembered opposed to the good these people might do? Who gives a crap if a guy who stole stuff from someone after that helps out a noob with some friendly advice or some change, he did something fundamentally WRONG which you don't make up by just handing out a few gifts lmao.
It's funny how people seem to think that just because it's a game, the concepts are somehow just a game too. Those are real people playing, most of them payed real $ for the items they have. Scamming is also a real offense.
If you think the world and the people are all so ''good'', look back in history and see a bloody path that's been carved out crossing all borders and nations from the moment we rose as monkeys till the moment we will be gone in ashes. All to sathsify the unstoppable need for ''more''
That's enough ''serious'' stuff, I'm back into troll mode, do with it what you want
PS: I'm not a good person either, I'm rather mean when I want to and I like it.