It's Season 7 And People Are Still Making This 1 Simple Mistake
If you play a juggernaut OR tank that normally buys an offensive item first item and THEN go into tank, let me give you a small bit of advice that will increase your overall performance.
If you're jungling one of these 2, the FIRST item you should get when you see your team behind and you're not fed to where you can buy your first item already, is a DEFENSIVE item for whichever lane is snowballing the hardest on the opposite side. So if it's an AP snowballing, get a spirit visage or banshee's first item (or whatever you feel is best).
If you're playing top lane and you die to a cheese champ, even if you have a part of that black clever, SCRAPE IT and get yourself some DEFENSE. You're playing tanky champs, take advantage of it. You rushing an offensive item when you're behind is only going to make matters worse.
It's time we put an end to this "omg, we got no dmg team is bad I have to carry" mentality. You keep that up, and you'll only hinder your climb. Part of carrying is knowing HOW to carry and WHERE your carry option lies. Maybe, beefing up and allowing your carry teammates to dish out damage whiles the other team blows everything on you is better than you trying to go in and DIE before you even accomplish anything.
Just some food for thought people.