The fact that people don't consider online gaming a sport is fair. But if I'm not mistaken its called "e"-sports for a reason. E meaning electronic. This is a very distinct difference as far as I'm concerned. I agree that its not a traditional, go out and get sweaty, beat on your friends and have fun, work out to get more endurance kind of sport. It is however a sport of its own kind. You have to train your body to respond to certain stimuli, build up your finger/hand/wrist muscles to prevent injury (I've seen Aphromoo use a bander to constantly put resistance on opening and closing his hand so he can increase the amount of endurance he has), you have to be able to adapt to ever changing situations, you have to train your mind to react quickly, you have to train mentally to be able to endure the amount of hours these players put in on stage and in practice matches. I remember when I started playing pool. For a long time that wasn't considered a sport where now it is (even if it is a dying sport).
All things being said in the end it doesn't really matter if people want to look at eSports like League as a real sport because we all know it is in this day and age where everyone is using computers or game consoles and not going out into the open world as much anymore. Besides the ones that are going to campaign against these sort of games as not being a real sport are the ones that will never play it in the first place.
ok. end rant. lol.