I am sure we all come to a point where we have no choice but to leave the match, due to some screwed up situations. so i decided to sum it all up.
Situation 1: All eyes on us:
This is when u have two pairs of split screeners within their first prestige. Yup, fresh from the garden. They will step on every ied, hug every camper, throw knives at choppers, and of course, most likely, double team to drop a crate stuck on a roof.
they will die pretty much throughout all the match and feed ur enemies all the lokis they have ever dreamt about. in such a case... Run like Forrest Gump.
Situation 2: Barnacles:
When all ur team mates are helpless campers... hanging onto a wall, corner, @ss crack, anything where a human being can fit and just waiting to be killed like a sitting duck. aside from feeling like ur alone in the match against 6. a team of full campers that can't camp properly will be an instant loss.
Situation 3: Where's Waldo
When ur opponents are hiding, not camping, but hiding (To be more specific, like in the bathroom in the cabin in white out). u will kill them ofcourse, although... the whole period of time will pass and u would probably have like 10 kills in the end. 10 minutes 10 kills... u can stay for that or just look for a proper lobby.
Situation 4: 300
If ur up against a hacker with God mode on... well... let me put it this way. Leonadis and the 300 spartans held off the persians, and Leonadis proved that even a God could bleed... then he died. same will happen to u and ur match.
Situation 5: Happy hour
Some cheaters do this hack that gives max xp if u score anything on them. kill them, piss on them, throw a flip flop at them. u gain 99999 xp which then pushes u to level 60 of ur current prestige. for alot of random noobs, that is ok. For players who put effort into their gaming experience... then u should walk away on the spot. I honestly don't want to get banned by gaining hacked xp... i got too much achievements and golden weapons. i am sure the majority will agree to my opinion on this matter. (If they ever decided to take action on such hacks)
Situation 6: Good Job match maker
When u get dropped into a match that is about to end with ur team losing. If ur running a winning streak, then that is the match makers way of giving ur winning streak the F in ur @ss.
So this r basically what pushes me out, I usually avoid all these situations by playing with a good cooperative team.
These 6 situations make me pull back most of the times.