It's okay, according to the latest theorycraft, Feral Druids and HaT Rogues will be owning everyone's faces, so you might as well go back to being a water dispenser. There's still plenty of room for things to change before the patch launches, though.
To Blizzard's credit, they've been trying to "fix" Spirit for ages. At first, it was useful only for those classes with a Meditation-style talent. Then, to make it more attractive, Blizz started pumping it full of secondary effects, but then they turned around and made a lot of regeneration dependent on Intellect. The situation now is that nobody really knows what Spirit is for or how they are supposed to value it compared to other stats.
From an itemization perspective, Blizzard benefits from Spirit in that it allows more diversity of gear. Otherwise, you end up in a situation where every caster item has int, stamina, spellpower, and two of haste/hit/crit. Blizzard wants us making tradeoffs in our gear choices and they want competition for "best in slot" items.
In terms of which stats benefit whom, here's kind of a breakdown...
Plate Phys DPS: Str, Agi, Sta, Crit, Hit, Haste, Attack Power, Armor Pen, Expertise
Mail Phys DPS: Agi, Sta, Int, Crit, Hit, Haste, Attack Power, Armor Pen, Expertise
Leather Phys DPS: Agi, Sta, Crit, Hit, Haste, Attack Power, Armor Pen, Expertise
Caster DPS: Sta, Int, Spi*, Crit, Hit, Haste, Spell Power
* Except Shaman
So really, stat-wise, we've got a lot less on our plate to worry about - seven stats vs. nine. Dump Spirit and we're down to only six.
In the future, Blizzard has talked about phasing Spirit out entirely in favor of Intellect. This is not set in stone, however, just speculation.