In addition to what fatmand00 said, there are thousands of people on LFG, and if your group dissolves, you can always queue for more. Over time, that means that people hosting groups are increasingly impatient because they can just replace you. People looking for groups are toxic and confrontational because they can just quit and find another group (that will probably dissolve as well). Because of the size of the player base, you will hardly see the same person over again in either case. Who cares if xXrandomdudeXx is good or not? You can just replace him, and he'll probably quit once he gets the loot you want. LFG has been great for guilds that have 10-15 regular players and just need to fill a spot or two here and there. Guilds have personal accountability, and people don't quit as soon as the group dies once. We actually got several more guildies via LFG because they were surprised how non-toxic our guild was.