Pretty much this.
And this.
OP, you say you're not trolling, but it's profoundly hard to believe you when what you're complaining about is that the world is no longer entirely static and unchanging based on what a player does.
If what you really like about MMOs is terrible, terrible gameplay and implementation, I recommend you try Everquest 1. That game's still around, you know.
Also, if you're not trolling then you're definitely at least lying. You have never, ever found "a few others" who have made the decision not to purchase Cataclysm because it makes liberal use of phasing. You haven't, they're not out there. Maybe you talked to someone about it and they were sympathetic to your presentation of the idea instead of calling you insane outright, but that's not the same thing.