I don't understand this community and the balance

To me, it blatantly obvious that both the items and the runes are really unbalanced. I feel as though AP items are "left behind" and AD items are so broken its not even funny. Concerning runes, damage runes are everywhere but what we have for sustain and survivability is almost non-existent. I'm of the opinion it is generally not the champions who are the problem, though there are exception of course, its the items and the runes that push things overboard.

Riddle me this: If ADC-esque items where a lot more expensive and did not have any multiplicative effects like crit, would ADCs be a problem?

Riddle me this: If tank items worked against heavy burst but no sustained damage, would tanks be overpowered?

I ask these questions because is my conclusions are correct the reason we have not seen any changes of note, is because what the average player wants and what the LoL dev team wants is not the same thing.

Finally, what usually happens when I attempt to post a carefully thought out post concerning these topics its like people get so upset or so trolly, that rather than be part of conversation, they attempt to derail it so the whole point of the post gets completely thrown out. As far as I'm concerned, if you are allowing words posted on a forum to get you that fired up, to the point where you no longer want at counter-argument instead you want to just to silence the poster, you don't belong on the forums. If you allow your emotions to interfere with logical conversation that you must have the maturity of a 12-year old.

The fact that this happens so much is irritating to me.