max_bmw said:
"If you disagree [that not all of your alts need dual-spec], then just run all 10 of your level 80 alts through all 25 daily quests everyday for a week"

A week? More like three days. The most common cash reward for a level 80 daily is 13g 23s. Multiply that by 25 quests, and you get 330g 75s, not counting drops. My weekday routine includes a dozen Ymirheim/Skybreaker/Shadow Vault dailies, completed in about an hour, for which I net almost 200g. I figure most 80's can raise the money with 5-8 hours of income-producing labor, less if they know a good farming route. Surely you can spare five hours between now and whenever 3.1 drops (I'd say you have at least a month.) And if you don't have dual-spec on zero day, so what? Get it later, after somebody else deals with the inevitable launch-day bugs.

Les Bleus have said the same thing: if you can't put in the time to raise 1,000g for each of your ten alts, maybe you don't use all of those characters enough to merit dual-speccing.
http://forums.worldofwarcraft.com/thread.html?topicId=15198918444&pageNo=1&sid=1#11

As stated in the article above, nobody *needs* dual specs. They're there for people who want the flexibility, or who are already spending 100g a week on respecs; they are not a requirement to progress through further content. They are not required for all of your alts. They won't be required in PUG's, unless the leader is a real control freak. About the only person other than yourself who can legitimately expect you to dual-spec is your guild's raiding or battleground leader, in which case he/she needs to clear the calendar a bit so you have time to earn some money.