The reason Pokemon got ruined for me was their was hardly ever any plot, besides, "we r on r pikamanz questlolz o new trainer battlz i win!!1!11 uh oh team rocket defeat dem again yayyyy!!1111one *end episode*" and then a few other meaningless bull. The other thing was that, the characters just SUCK. Ash is annoying, plain and simple, it seems also whatever female character joins him, whether it be Misty, May, or Dawn, they all seem to argue back and forth. Brock would be cool if he weren't such a pervert, well, not pervert, but you know what I mean. Mostly every other character they come across is annoying as well. They contribute hardly anything to the plot, which like I said, is hardly anything. The only time you ever see a good FULL plotline is in the movies, and even then, it sometimes sucks(although I do admit, I would prefer the movies > the anime). Pokemon just died for me. I tried watching D/P because I wanted to see if anything has changed, but no. Only thing that's changed is new land, new pokemon, new female character, which all that stuff happens in every new story ark of the series anyways. And the new voices are just bull, I mean, yeah, the old voices were crap too, but these new ones are just...to tell the truth, if I had voices like any of those, I'd personally push my hand down my throat and yank my vocal chords out.
And yep...just my opinion...