Come to my lobby, ill kill you with a bunch of pugs it is what I am good at.

Quick preface to my response:  I mostly pug now.  I did play solely in premades for quite some time.

I know the OP is a little off, but the point is that people freak out simply because of familiarity.  I'm pretty sure these guys are a weaker premade, but people run like hell just because familiarity is high.

I'll go a step further - the pug community is generally responsible for pug stomps.  Yup.  Sounds crazy, but its "experienced" players that see the high familiarity and then leave the games that result in people with lower skill joining.  One of us "talented" more experienced players will join their game, realize "its a trap" and then piss off.  Then a newer, more inexperienced player will join and stay... only to be joined by another player who isn't aware that he should "run like hell" if familiarity is high.

Now, you experienced folks - let's be realistic.  If a couple of you joined their game and waited it out, based on their stats alone, odds are you would crush their premade.  But simply because of high familiarity, you probably run. And that's a problem.  I've accepted that, generally speaking, I personally can't play on the same team as my friends because of the overlay.  Should it really be that hard for less experienced players to play together and get in a good game?  This is a problem with our little community. 

ya but i played some games of all random today with ideal from the gL clan and every game we got a noob da/not so good da that at times almost lost the game for us and that was against other pug players... when new players join a game they tend to pick the "coolest" dg rook reg or da turning them into a feeder that not even 2 excellent players can compensate for especially against a pre on voice cause they will just coordinate ganks...

if you pick all of the squishy dg's then ppl will stay e.g. reg qot sedna and da.... its a decent team, nothing compared to the top 3 but still decent, that will convince experienced players that you are trying to make the game fair

Also a true statement. 

also no... I've tried to entice people to play my premade this way too... doesn't generally work, but its alot of fun when it does.

Really out of the last 10 games I made each had a premade that joined and left. Why you ask, because they refuse to seperate and play against each other. If a premade won't play against each other than they don't play together in my game at all.

The forums lie

Playing with friends is incredibly fun. When I was eight, my cousin and I used to curb stomp all the new players in pvp of a certain game.  It really isn't fair unless the premade team has a disadvantage or the pug team consists of all equally good or better players. The problem is that premades create noob traps and encourage weak players to join just to slap them in the face for a higher win percentage.

This is silly.  A high win percentage generally means that people are more likely to want to play on your team and that you will be paired with weaker individuals if a game gets balanced. Plus its more intimidating so you get less games going.

I'm telling you - this is exactly what happens.  Premade hosts a game.  Experienced player joins the game on the other team.  Experienced player leaves because they feel at a disadvantage.  Experienced player could have waited and perhaps would have scored an experienced teammate.  But they don't wait... they generally take off.  Then another experienced player joins, does the same thing.  Maybe says "good luck with that premade" and leaves.  Now after 10 minutes of waiting, joe new guy joins.  You can kick him, but if there's no one else in the lobby, now you go back to an empty lobby.  This is how "noob traps" occur.  Not some devious let's pad our stats plan, but people that want to play together on the same team get stuck with weaker opponents because the more experienced folks are convinced they are fugged if they try to play against the almighty premade. 

And again... I mostly pug now.  I'd generally prefer to play on the same team as my friends, but I recognize that the community frowns upon this.  I really disagree with most in community on this, but I accept that's what the general perception is, so I play in premades maybe 15% of the time anymore, if even.

but at the same time if 1 bad teammate joins you are screwed and the pm usually won't kick cause as you said they want to play... so i leave.... and then i just wasted 20min where i could have been playing dg....

 if 1 bad teammate joins you are screwed

This is so true. Premade teams usually have all players of decent skill. Two good players who are pugging can get stuck with a noob and be destroyed easily by gobbling up the noob for xp and gold.  

PUG vs. Premades are almost never balanced because noobs will join the game, not realize they are fighting an uphill battle and stick around. Any experienced player who joins will run from the noobs, and eventually the noobs will pile up until the premade team has an easy victory.