Because by trying to break the meta it produced more varied gameplay.

Going completely against it probably isn't the best way to break it, tweeking it little by little (such as duo top) will slowly lead to a change in meta.

Personally I've been having success with ADC mid, and APC bot with a Soraka, her MR reduction and mana supply give AP's a nice boost to damage and sustain.

Saying "meta is the only way to go" is a stupid mindset, I never play to this so called "meta" however I win as much as I lose, it makes no difference in gameplay, and frequently I carry my team rather than the other way around.

Because otherwise the game will just become stale. It sucks when trying anything outside the meta people flip a **** and dodge the game.

There are always other ways to successfully play the game. Just because something is 'meta' does not mean it is the only way to play successfully.

Because the meta has always been the same, right?

meta is boring tho Q.Q

Because Zed + Kat Mid. That's why.

Being creative and testing things against the "Meta" is how the Meta evolves and this is how more depth is brought into the game over a long period of time.

Most people who play this game aren't good enough to play outside the meta. that's the problem. If this game was filled with outstanding, or even mostly decent players it wouldn't be a problem. But it's plagued with awful players who seem like they can barely tie their shoes. Therefor, unless you're together with a group of skilled friends, the meta is the best way to go.

Nothing anyone can say will change that. Small tweaks to find a better meta is fine. But the meta is there because it works. I'm not saying the meta will always stay the same. Not at all. Every team should consist of a tank, support, jungler, and ADC.