The truth about the balance of this game
Everyone on these boards demands perfection. It is utterly ridiculous. It is simply impossible to get perfection in a game like this. The amount of stress that people get from PLAYING A VIDEO GAME is stupid. If you are not enjoying it, stop complaining, and go play something else. It is really that simple. "OH BUT JAX IS OP BLAH BLAH BLAH!!!." I main shaco, I bought jax with IP, played a couple of games and once I understood how he worked, I was able to make game play decisions that countered him...WITH SHACO. I've even beaten him with Eve since then. Here is the deal everyone. This game is going to morph, change, and will never be 100% balanced. Most of the time, people that are beating you are making better decisions and playing better. That really is what it is coming down to. I've gone against "OP" champs plenty of times. Sometimes they win, sometimes I win. It comes down to who played better. Most of the champs are viable when played well.
I've been in this game for 2 years, since right before season 4. In season 5 I had I think 8 promos from bronze to silver. I would do so well, that I would lose promos, and go on a win streak straight back to promos. It was almost guaranteed I would get an ADC AFK or intentional feeders. SO whatever, I just went back to norms and was playing with golds and plats. Again, it is a game. If it is causing you this much stress, go out and get a real life. There is so much more of this world to experience than league.