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I'm not interested in battling over wi-fi or having perfectly bred Pokemon, so breeding for IVs is something I don't partake in.
Though I understand people who ARE interested in those things and more, and that is perfectly awesome, since it got easier and its more accessible. And obviously if you want to get into competitive battling, IVs/EVs/abilities become very important.
Pokemon is flexible enough to where you can pretty much do anything and enjoy it.