In your opinion, what is the worst feeling in this game?
Me personaly it probably has to be playing 
from behind.
You will never know the true meaning of agony until you play fiddle from behind, seriously, most of the champions at least have some form of utillity to help their team if they're behind, for example: 
has his ghost dragon to siege, 
can build tank and initiate with ult, 
has 
+ Tibbers stun, 
has his cage that can trap an entire team if he is good enough, 
turns an ally immortal for a precious few seconds, etc.
And sure you could say that he does have utility in the form of terrify and crow storm, but let's be honest, if you got close enough to fear somebody you are also probably dead and crow storm is good initiation that can make the enemy team panic, but if you're behind on Fiddlesticks then the enemy has no reason to be afraid of you and will just kill you as soon as you pop out of nowhere. Also, Fiddle has no options for escaping unless you have flash so if you go in, that means that you have committed.
But this is just me, I'm honestly curious to see what makes everyone else miserable.
as 
. Playing against Teemo already sucks, but he just shuts down Nasus entirely. If the Teemo is good, there is almost no possible way to get your crucial early-game stacks. Come 20 minutes, all you can do is stay top and attempt to stack, but at this point, you're too far behind to make a difference no matter how well you do.
