People complain too much about Lee Sin.
Ok before everyone starts bashing me and all I want to say that first he is strong jungler, but he takes skill and with that a lot of risk. I tried using lee sin a few times and like omg he is hard to use i would never use him in a rank game because i will mess up. His strength is in his early game so if you make a mistake early and die he becomes pretty bad and the opponent jungler has a level advantage on him. I do agree that has been a strong jungler for a long time and because of that some people feel like he deserves nerfs and I agree with that, but people here and reddit make it seem like he is broken as hell and every player at every elo should use him and you will climb in no time.