I know exactly how you feel. I know I'm not the greatest summoner in the world, but at least I'm there. You can look at my losing streak and see one player on my team in each game that is much lower level than everyone else. In a couple cases, they have starter items or no items at all.
Something needs to be done to punish those who go AFK or idle. Moreover, there needs to be a reduced point loss for surrendering/losing with an AFK. The reduction in point loss should be ADDED to the AFK person's negative score.
In fact, if you're AFK often enough, you should simply be ban from ranked games period. I'm tired of people saying "there is no elo hell" when there absolutely is for one reason and one reason only: AFKs.
I'm just so tired of there being so many AFK. It's impossible to practice and get better at the game, because the games are so lopsided and unrealistic. When you're 4v5 and a game goes over 30 min, you KNOW the rest of your team isn't bad. It's just that the AFK has unbalanced you so bad there is no way of winning.
Above all other things: salty/toxic players, people playing odd things in odd positions, even straight up bad players.... like I said, I'm not great either. BUT PLAY THE GAME!
Typical excuses for AFK if they return:
"Sorry I was talking to my girlfriend"
"Sorry I was texting my girlfriend"
"Sorry I was (doing drugs)"
"Sorry my computer sucks"
"Sorry my internet sucks"
There are other modes for you people. GO PLAY THEM! Stay out of ranked!