When Bottom lane becomes the worst lane.
When it comes to each role. Bottom lane is the worst lane currently and its the only lane that possibly has no chance of making comebacks. During the laning phase, first blood is usually given around 3-4 minutes either coming from ganks from the Jungler or dying bottom lane. When you die bottom lane and the Marksman/ADC gets the kill, the lane snowballs uncontrollably, especially in solo queue. Usually ends up turning into a lane where you don't come out from under tower or else you will die. Some may say just farm up for the mid/late game but right now the game has speed up to where you are lucky to even make it to late game. On top of that, the drake advantage in bottom lane makes it next to near free since nobody can really contest because bottom lane is too far behind to even help contest objectives. What really makes bottom lane worse is how mages makes the lane that much more harder to be in. (
.) or even just regular burst champions with no utility. I'm not saying this just to complain, I'm saying this because it needs to be looked at. 
and
aren't played because people find them "boring" and would rather play