Jungle: There are nine retards in your game that will hate your guts no matter what you do. Jungle camps are on steroids and winning vs them is harder than beating a Mammoth as a Tosa in Tokyo Jungle. You have to ward, learn how to smite, change your upgrade depending on your situation (like old Viktor) and there is Shaco and Lee Sin to deal with.
Support: There is one retard in your team that will hate you for anything you miss, while all he does is either going too aggressively and dying, or farming while you go 1v2. Occasionally, said retard is actually a good player, so that might chill you out a bit. You have to ward, land skill-shots, protect a retard all day, mute said retard when he dashes offensively instead of defensively and blames you for dying, and you have to put up with Blitz/Leona/Thresh in lane.
Top Lane: There is one retard on the enemy team. That's it. Match up is everything. Jungler won't give a damn about you due to how irrelevant top lane usually is compared to the other flashy lanes. If you go Tryndamere vs Teemo, you lose and that's it. If you go GP vs Panth, you lose. If you go anything melee vs Vayne or Kalista, you might as well just go support and help your jungler. You have to lane vs Fiora and Teemo, so I guess that is pretty annoying as well. Not to mention getting kited to death most of the times.
Mid Lane: Immobile mage: You have to deal with the broken mobility creep enforced in the meta. You are part of a weakened race that for some reason, still uses mana, while the enemy Yasuo/Zed spams his crap without any backlash. You are usually the first to get ganked due to your mobility, and if you are skill-shot reliant then my condolences because you are wasting mana in 6/10 of your skillshots at least. I guess it is difficult if you are against enemies with complete upper hand on you, plus relying on a scumbag Lee Sin that for some reason always keeps blue to himself in a few games also ruins it a little.
Mid Lane: Mobile assassin: You feel like you outplay nearly anything that moves, you are nearly impossible to gank, and you have some sort of toxic mobility that I, as a salty former Veigar main, completely despise (I don't see any 0.75 delay on blinks, Riot!). Nowadays, waveclear isn't your weakness anymore as you can do it like most mages, but point-and-click CC is, which is the reason why Riot is giving "counterplay" to so many champions. Lets hope Annie and Taric survive your genocides. I guess you have to deal with Zhonya's and disengage comps (and I hate those too). I don't give you bonus credits for match-ups because you are the most annoying thing to go against in mid lane.
ADC: According to you, there is another retard that doesn't ward, peel or CC anything, and so it is his fault that you are 0/4. You right click minions and pretend Vayne is the hardest champion in the game (yeah I know who you are). You might also think kiting an Udyr with Kalista is, for whatever illusion you have, a challenge. When you do decide to fight, first you have a snack, eating a Thresh hook in the face and getting a couple of Corki's auto-attacks in the face. In teamfights, your skill-cap is now highly increased (even I admit that), but taking in account tanks blow up so easily, I still think that lifestealing off the closest target is by no means the hardest thing in the game. Also, you are very likely to think every kill belongs to you and duo often and blame the jungler for not camping your lane and getting CS himself.
Jungle wins, Support comes in second, the rest is pretty much the same.