So then the answer is: do not play any online game where you are affected by other players?
Or is the moral answer: If you want to play a game that is an online game with other players, why in gods name do you not go with the flow. Why not act as how you want to be treated. Because what happens if everyone does what "these" players do, the game would come to a halt. So why do you want to play such a game if you cannot commit to that? It most def. is not suited for you. But no: they still come to this game and become a liability or hindrance to people who do commit. And I am not talking about a great level of commitment either. Nor talking about huge amounts of DPS. There is a difference between people whom you can see want to play properly and people who just do not give a shit and leech.
Leeches are the ones whom I wish just got another type of game. But ultimately it does not matter what I think or anyone thinks. The ones leeching will still be able to come to the game (pay a sub) and do whatever they want. God knows why they want to do it like that.