Learn to ping and stop pushing the blame

I hate it when someone from another lane roams successfully and then your teammate from the roamer's lane goes: why the f*ck did you die to him now you ruined my lane... and he never bothered to ping. You tell him that he never pinged and he goes: well you should have checked the f*cking map idiot... Sure. Point there, I could have checked map, but isn't it your job at first to alert teammates of a missing laner? I can't just babysit your lane and constantly check map in case: the no-pinger's laner is gone, I should back off, there is a reason that pings are in the game and it's first your responsibility to ping. Stop adding needless responsibilities for your teammates and maybe they might do better.