Stomping the Enemy is unrewarding...
Sorry but games that are stomps by one or the other team are flat out BORING. There is so little chance of a comeback at the moment, that you might as well just give up at First Blood. I think that this has led to the rise in AFKers and feeders because what is the point anymore. Even if YOU play carefully, another lane usually feeds and gets the enemy ahead or botlane gets ganked by 4 people under tower in an impossible situation.
Doing this FEELS DIRTY and I don't even feel like playing the game anymore because I like fair and balanced games where mistakes are recoverable. League doesn't feel this way anymore.
If I win a ranked game by stomping the enemy, it leaves me with an empty and slightly douchbag feeling inside. It makes me actually hate myself a little bit for making it so miserable for the other team. So nobody is having fun. You really need to be a complete emotionless dickhead to enjoy this current meta.
Riot then EXPECTS players to conduct themselves within the Summoner's Code but at the SAME TIME, advocates such dirty and douchbaggery tactics in order to win games. Its almost like they are promoting a toxic environment.