I actually raise my pokemon with attention to IVs and Nature. Why? because if you're going to invest hundreds of hours in raising something, hopefully it will amount to something. For this very reason I found pokemon black/white to almost be unplayably easy for anyone that requires challenge. You can say the other pokemon games were easy as well but then you obviously have not played the endgame for HGSS/battle frontier/meta-game. It's gotten to the point where I'm about to start using pokemon I like rather than for usefulness. Maybe a horsea-lead run as I mostly solo the elite force strictly fueled by HORSEA power? We shall see. I'm planning to use quality underused-underevolved pokemangs just to try and get some kind of strategy to this game. I know people have different tastes but I don't see how you guys enjoy just obliterating the game without ever needing more strategy than a rare hyper potion