Players who are more addicted to harm and that still respect ToS will buy lot more cubes, occasionnal Gachapon plus some cosmetic or nearly none for Maplestory M Mesos, this represents a VERY small number of players who cap damage. And lastly, players that are so hooked on damage and occasionally feel as though Nexon scams them with cubes gramble and much more reasons.
It happens for them to sometimes buy/sell NX from/to other paying gamers of same type as well as non-paying players of last type for more mesos, buying godly equips with actual money mainly from quitting players of any kind, then Paypal and even purchasing meso out of meso website should they see they could get more mesos by paying less real cash if they seem at NX:meso rate in-game.
Of course, you can find botters who are not really gamers, they use a game as job, which can be completely BS and they are thieves, stealing real money x.x And also a tiny amount of players may use this game as occupation. They upgrade equipments in any way and finally sell for real money (USD or paypal) and don't necessarely stop the buy Maple Mobile Mesos.
Certain people would use this explanation"oh but that I prefer donate to another player for hard work" mainly due to Nexon scam atmosphere. People who"donate" to other gamers do not recognize they are stealing Nexon company directly.