I've been doing a ton of things recently. Shiny hunting/breeding, Battle Maison, EV training, Friend Safari, etc. I still enjoy doing all these things I doubt I'll stop soon. Especially when Pokebank comes out, then I definitely won't stop.
I must be the only one who enjoys the side parts of the game! Admittedly I haven't played Pokemon since Gen 3 so a lot of the stuff that other people have been doing consistently with each gen I haven't had a chance to do in years, but I got the game Oct 18 and between the Wonder Trade and GTS and getting to the breeding section I haven't even gotten to the second gym yet, but have 232 pokemon in my Pokedex and am having the most fun time just trying to get people to trade with me to get the pokemon I already have with their hidden abilities or getting as many safari pokemon as I can.
Just using MM to breed for shinies that I wanted. Getting shiny legends from previous gens from other people around the world.