Are you trying to end your games???
Because you should, nothing tilts me more than an entirely winning team, winning all lanes, not pushing them strategically.
If someone in your team is alone and getting gangbanged by 4-5 of the enemy team, GO PUSH A LANE, dont go to that person to get a kill and die.
Your number one goal in this game is getting that nexus, not playing death match.
If you ace the enemy team and have your lanes pushed out, no drag or jungle animal is as valuable as those inhibitors and turrets.