What's up with the defeatist attitude ?

[Zabuza]

Just joined a DF Coil turn 10. Before we even started, tank is marking three people for tethers. Our ninja consistently unmarked the numbers. Tank and ninja start arguing, ninja pulls/trolls. We kick him from the group, and then everyone leaves. Like really? Would've taken us 30 seconds to replace a DPS. I waited 37 minutes in queue for that...I don't understand DPS who are so quick to leave when the queue times suck that much. Isn't it worth it to at least try instead of leaving and waiting another 30 minutes? I don't get it. Had a group earlier today that split too when it was clear we had what it took to win the fight(we got it to 20% without much issue.) Why are people so impatient and cowardly? If they think their time so valuable, wouldn't they stay rather than leave the queue and wait again? Tanks and healers, that's a different story, but the dps are quick to leave too and I just don't understand that lol.