Mid laners....

Lately I have seen nothing but terrible mid laners on my teams. It's like every game I get the mid laner that "has to get ahead early" and so they dive and they dive and they dive. By the 15 minute mark they have fed the enemy mid laner and jungler 9 deaths and then just like EVERY mid laner, blames everyone else for them being fed. I had a fizz that fed the enemy mid laner, and by the 25 minute mark we were noobs because he couldn't kill the enemy adc in two bursts. Why are all these shitty mid laners showing up out of no where and ruining EVERYONES games. They play as if they are ahead when they are clearly not, flame everyone else because they just keep trying to 1v5 just to get a kill and fail because we didnt follow up on his "engage." I am not on tilt or mad I am just utterly confused as to why these mid laners don't know how to tell when they are behind and play passively. Apparently the concept of that is too hard for simple minds.