I've been considering hanging up my ADC towel because my supports USUALLY don't work well with me. They'll engage when I want to farm, stay back behind me doing nothing when I want to engage, more often than not they'll just blindly charge at the enemy in the early game and feed kills or make me waste heal just to keep them alive. It's like they start the game expecting a fed ADC right off the bat lol. I'm like no, I need time to get to that point and repeatedly charging in feeding isn't helping... And then they get mad at me lol.
Here's an example of a scenario I see a lot, usually from bad supports who don't know they are bad. My support starts the fight by ccing the enemy support in some way, then going for an all in engage on the support. This puts me in a position where if I go to focus the support with my support, the enemy ADC will focus me, and lately that means having to take like 3 Lucian double shots to the face. So I opt to focus the enemy ADC while my support focuses the enemy support (who still has flash and exhaust usually). Then, the enemy support just ignores my support altogether and turns on me with that exhaust ready, so I'll be getting focused by two people while my support has still done no damage to the enemy ADC. Then I have to waste flash or something.
Alternatively, if I focus the enemy support along with my support, we MIGHT kill him but then I will almost inevitably will die as well to the enemy ADC, and then my support is left to 1v1 the enemy ADC and the enemy ADC usually wins that fight and gets a doublekill. (Except in odd scenarios where I've seen like Tahm Kench/Thresh/Leona double kills happen) So yeah, now when I see this situation start happening I usually just think it's better to let my support die.
Two more things supports do that I think I have every right to complain about, are the supports that just roam nonstop so I'm left to 1v2 the bottom lane. Yeah I'm looking at you Bard. You don't need to be dying at Rift herald while I'm getting turret dove in the bottom lane.
The last and single biggest most annoying thing any support can do to ruin me is push my lane when I die, roam, or recall. It not only makes me miss a couple of minion waves which I would have otherwise gotten, but then when I come back to lane the minion wave isn't at my turret where I want it to be, it's pushed to the enemy turret and I have to overextend to get CS or just sit back and wait for the enemy to push the lane back to me. Then they can just freeze the lane and starve me more. Then if I die again, and my support pushes the lane again, I'm basically fucked because I've already lost out on too much farm and experience. At least if my supports are just running in and dying I can still get my own farm and experience. lol