It's the butterfly effect of certain individuals.
Take this survey, and figure out what is going to happen.
I) You are level 2 Erebus on Cataract Dominate. A level 3 Sedna and Oak are moving into your lane. Your partner, a UB, is on the other side of the map. You should.
a] Withdraw, and notify your teamate 2on1
b] Withdraw and say nothing
c] Walk up to Sedna, snack her once, turn into mist... AND THEN FUCKING DIE!
II) You are a level 3 Erebus now. A level 4 Sedna and Oak are moving into your lane. Your partner, a UB now level 5, is on the other side of the map. You should.
a] Withdraw, and notify your teamate 2on1
b] Withdraw and say nothing
c] Walk up to Sedna, snack her once, turn into mist... AND THEN FUCKING DIE AGAIN! Then tell your team mate you didn't just try and win a 2on1 against higher level and higher equipped DGs... with mist, when he asks you not to 2on1.
III) You are still a level 3 Erebus. A level 6 Sedna and Oak are moving into your partners lane. He is a level 6 UB who just toppled the corner tower. You move into his lane to assist. He says "OOM, run" You should.
a] Ask WTF "OOM" means
b] Do what he says.
c] Run towards Sedna and Oak. Cast Mass Charm 1 at the start of the battle. Turn into mist.... FUCKING DIE AGAIN. Yell at your partner for abandoning you.
IV) It is the end of the match. Your partner says "GG" when their counter is at 9000, and your is at 7000. You should
a] STFU NOOB, that's still pretty good considering you died 3 times in 10 minutes. Try not to draw attention to yourself.
b] Say GG, apologize to your partner, realizing you lost the match.
c] Yell at your partner to all, and say the match was lost at III because he didn't stay and fight. Boast about how you win 90% of your games and that you had the skill to carry through said battle to victory.
v) You play DG and live by the motto "If you die, you are wrong... learn why". You are a mostly easy going guy. Occasionally you'll ask people not to 2on1, it's not like you say stuff like "OMG rape cakes, stop dying... if you can't obviously your dad beats your mom infront of you which is why you are such a fail". You never concede, because you believe it's fun to let people savor their victory. You just experienced the above team mate. You should.
1] Come to the forum, lay some smack down on the obviously wrong posts and be despised by the people who don't get it.
2] Come to the forum when you are in a bad mood, lay some smack down on FrogBoy and get banned. 
3] Post something like this. 
Really.. with so many people running around like this... it's hard not to fuel the fire.... you'd go insane if you held your tongue on some of the crap you see from this community.
You want DG to be a nice community... the learning curve has to go way up. It needs to be turned based. It needs to have 50 DGs, and about 1000 items.... then it will take 5-6 years for smart people to figure the game out and munchkins will not play. :)