Sadly it's like no one has any common sense , they join a GH 4 go top we win top then 3 guys port back to buy items and run back top or help,that in game I AM IN, normally 4 win top 4 port back......... where does this sound like a good idea? to port back with full hp and mana just to spend 500g or 750 on the next tier... really people, you HAVE to stop this. Levels are better than Items, so if you stay and push the lane your get more levels and be stronger than porting back for that item EVERY single time you can upgrade.
You should port back when you might die or if you feel you need to help bot who is getting 2v1 but if your going back to finish your build with full hp , your the reason your team loses.
a quick example of why this is a big deal is how top is such flip flop turret, like I said 4 guys go top and when they cap they just port back to buy items well since they got first kill there is a guy halfway to top as all 4 guys are porting back to buy items, then enemy takes top then there dumbasses port back when they take it to buy items, you know what I do ? 4 go top I stay top till enemy or friend comes. I go back and buy my items when someone is there, ill never leave it alone to go upgrade...grow up people and stop being so selfish.