Why SoloQ is fair regardless of afks and trolls

There have been so many posts about how unfair Solo Q is, how many trolls and afks there are, etc etc. In reality however, as long as you are not the one who is afk / trolling, you will always have the odds in your favor. As long as you are playing right, your team has 4 other spots for potential trolls, while the enemy team has 5 open spots for such a player. Sure, some will get 5 games in a row with a troll on their team, but at the same time another player will play against a team with a troll 5 times.

I do agree that its tedious to play promo games and lose them and try again, for many many times, and I would prefer a system where you automatically ascend to the next level at say 150LP or so, but at the same time I don't think the current system is particularly flawed.

Look at the creme de la creme of players. They face the same problem everyone else does, the difference is, they play enough games that on average the odds that are in your favor will pay off. If you only play a couple ranked games per week, you will probably not notice this, but then you probably shouldn't play ranked to begin with since you won't get very far with that number of games, and you should stick with normals instead. If you play enough, you will see that for every 9 games with a troll in either team, 4 times it will be on yours, while 5 times it will be on the other team.