It's not so much the Hoenn Pokemon I hated (although I did hate a good many of them, such as Roselia, Trapinch, Treecko and Spinda). It was more the general amount of fail that was Ruby and Sapphire.
I hated the contests, I hated the way people talked, I hated the music (with the exception of Rte. 120/121 and Meteor Falls...EPIC), I hated the fact that they excluded 186 other Pokemon (including most of my all time favorites), I hated the new fishing system, I hated the secret bases (they were the feature I was most excited about, but turned out to be the biggest disappointment), I hated that you couldn't get Pokemon at the Game Corner (only dolls), the list goes on and on
That being said, some of my all time favorite Pokemon came out of RSE, including Aggron, Swampert, Salamence, Metagross, Wailord, Kyogre, Dusclops, Sharpedo... they still got nothing on the first 251 though.