They aren't going to add that until the generation that Pokémon added it. (Can't remember if it was gen 4 or 5, or if I'm completely off)
I dont think there going to wait till gen 4 and 6 for mega evoultions they should do it soon or people would lose intrest
People are already loosing interest. Like myself not because of not having mega evolutions. But not bringing out new generations fast enough
if you need mega evolutions to enjoy pokemon you are a noob -_-. Mega evolution was just to change up the gameplay in terms of game freak. it was only for one version of the game...
Mega Evolutions may come but it is introduced in around Generation 4-5 which is a long way to go from now.
I do agree with voultronix it was only implemented for gameplay. You can't always expect what u want. be patient. pew pew