Just curious, new player grinding last bit to 41. I've found that Tindirin maps are decent places to do so. Faster XP for me I've found to join random pugs farming than to solo KT4. Why are they doing it? Assuming dragonscale chests from drake on Wilds, but what about other maps? Why do some exit out when other players join, I assume loot chances drop in full party? Is it ok etiquette wise to exit out on boss after sponging XP and give them any and all loot that may/may not drop?

Just random questions about how some loot mechanics work and also end game player thinking/reasoning. Thanks for your time, curious type and unguilded so no one to pester with questions.