soooo i reached 90...

What would you like to do next?

Dungeons?
Dailies?
Pet Battles?
Professions?
PvP?
Raid (Mogu'shan vaults once you gear up)?
Scenarios?
Alts?
Achievement hunt?

The thing about Dailies is that they a. progress over time, b. you don't have to do them all every single day, c. they can be ignored completely if they don't have anything at the "end" that interests you, d. you can pick and choose which ones you want to focus on and do those as you like.

There's a lot more to do than dailies though and most people I've heard remark that it's actually a bit overwhelming to consider where to start first. Not everyone has the same focus of what they want out of "end game" so while I know people want to voice their displeasure about them, it only derails what the original poster asked. They're looking for ideas of what they should do and it's probably better if people help out by pointing out the possibilities and what they're personally doing in order to help them choose.

What exactly *is* the end game? From what I've seen, once you cap and gear up a toon, its more fun to just make another one.

Then again, I'm one of those weirdos who like quests and leveling.

It's different for everyone.