We chat about videogames and videogame accessories.

EVs aren't important for anything but the most competitive of multiplayer battles
They are the little variables that Nintendo use to ensure that you can have two equally levelled pidgeys but they won't be exactly identical, and I'm not sure they ever intended for people to manipulate them by anything other than chance
The AI is far, far easier to play Pokemon against than a human opponent schooled in how competitive players do things and there is absolutely nothing wrong at all with using a team of pokemon you like and paying no attention to their stat balance at all besides checking whether their attack or special attack is higher to prioritise what moves to teach them

Type advantages and moves are important to know to beat the singleplayer, but EVs actually don't make that much difference at all unless you go to the incredibly time consuming task of maximising their benefit, which is completely unecessary because a pokemon with their EV stats assigned randomly can still beat the toughest enemies in the game