Which one destroys gaming communities/games?

In that other game, our guild decided to make a dungeon run, but we only had 4 of the 5 necessary people. We used the built in LFG tool to pug the last spot and went in. After the first fight, the pug tried to initiate a vote kick on our healer! We all lol'ed and pointed out to him that we were all in the same guild and that he shouldn't try that again. We got through the dungeon just fine after that because we decided to work together to get the job done.

The LFG tool brought in someone that was more interested in getting through the instance than forming a "Community". There WAS community with the guild though.

So NO, I don't support that the LFG tool SUPPORTS community; quite the opposite.

If you're joining lfg with a friend, its no different than grabbing random people from your server with a friend. Your friend was your friend before you went looking for people to run an instance with. But what about ehrn your friend isn't on? You'll queue up with 4 people you don't know, nor will care to know because they aren't even from your server, so as long as everyone knows what they are doing, not a word is spoken the entire run, unless someone feels a player is failing and initiates a vote kick but not before ranting at how bad said player sucks. Or someone is needing everything and hoping no one notices. Or the tank realized this is a fresh run and well f that, I can get my badges fishing for a near finished run. Or worse, the tank zones in, realizes he doesn't want this instance, and runs and aggros a big pull then leaves group. Or heaven forbid someone doesn't know a trick to a boss and there is a wipe, followed by a dominoe effect group disbanding. The odds that this is merely my personal experience are low when one of the above happens every other run.

Oh my that was a rant wasn't it? Now where was I? Oh yeah, barring all that, not a word will be spoken. And then when your friend finally does log back on and whispers, 'hey, you wanna do x? I need my dailies.' ...."Man, I already did mine today and I'm tired of running dungeons for now, maybe later." (True Story)

You know how everyone complains that this is a single player game with a multiplayer lobby? Yeah, don't kid yourselves, that is exactly what LFG is, don't believe me? Go walk around Org or SW, 90% of all the players are standing around waiting for queue while trolling trade or most likely alt+tabbed out. People talk about how lifeless this world feels when they're comparing a game where there are so many people just.....standing.....around.

Afraid of? hardly.
Not wanting someone whining at them because they aren't using the min/max cookie-cutter spec that gives 1-3% more dps over their preferred style of play, that they enjoy, and can clear content with?
Don't know why you think people should not have a problem with that.

Woah so one shared experience amongst 5 players represents the entire "WoW Community"?

What? Are you actually going to claim a bunch of "What if?" scenarios happens every other run as in 1/2 of all runs ever done? As in 50%?

By my estimation, cross-server LFG systems break up the community while the add-ons can shape the community in ways many don't like.

The community at large is always bad in every game. That's why creation of subcommunities (friend list and guilds) is something most people prefer long term.

LFG prevents building subcommunities in random group situations by filling random groups with people you cannot friend or guild invite.

It doesn't destroy communities, but it prevents subcommunity creation.

Your just basing it from your perspective. I bet I saw more times where a group of guildies would just boot out the pug right before the final boss because they didn't want them to get the loot. I've also seen 4 guildies all roll need on a piece of loot just because they wanted to keep it within the guild. It goes both ways bro.

Then allow us to friend people cross-servers? That way our potential subcommunities are even larger!

I'm asking what if, they happen all the time. Every other run (or 50%) is a very generous assessment.