While I apologize for, perhaps, the bluntness of my post, I in no way wish to apologize for the intent behind them. People around here who know my posting style well enough know that I don't sugar-coat; I call my shots as I see 'em, and I tend to (usually) be pretty sardonic about it too.
They also know that when I comment and critique, it's with the intent that hopefully you can improve.
I agree with Wilhelm; while achieving a presentable tabletop quality paintjob in a 'relatively' short amount of time can be an good goal to work towards (after all, nobody likes to play with unpainted models), there are a few sad truths that you have to accept (it took me many years to come to this realization and to put into practice techniques and methodologies that take advantage of this knowledge).
Cost. The sad truth (and this isn't a rant about GW prices) is that these models are rather expensive, and they will continue to rise in price. When you're spending hundreds and thousands of dollars (yea some of my 2k armies ballpark in that range unfortunately) on these models, you want to get it right. You don't want to spend that much money on an army, rush through it, and then realize 6 months or a year (or even a few years) down the road that you're not happy with it, and want to redo it all over again. Back in the good 'ol days when you could build entire armies out of pewter, this usually wasn't too difficult since stripping pewter models is easy. But with everything in plastics and Finecast resins (or Forgeworld resins), reusing models is an arduous and laborious process, and it seems kind of silly to spend more money (and more time, see below) just to redo the same army to "get it right this time around".
Time. The investment of time in this hobby is a cost in itself (time is money), and there's no sense half-assing the job with the "intent" of going back and touching it up again later because, lets be honest here, nobody ever does. Once they're finished to that initial quality and set on the shelf, it's very rare that a person will go back and continue to work on the entire army. Once the mind has accepted that it is "finished", it's hard to get around that roadblock.
The United States Marine Corps has a great saying: Slow is steady, steady is fast, fast is good. Where's the sense in rushing and finishing an army in a month, only to go back a year later and redo it all? Why did you bother wasting the time in the first place then? If you want a good-looking army, you're better off spending that extra time to get it right the first time around; that way you save yourself money, time and frustration from having to constantly redo everything.
There's a reason I choose to spend 2-3+ years on an army. You look at my Space Wolves or my Vampire Counts; I have been working on both armies since early 2008, and while I have only amassed a total of 6000 points of Wolves and 2500 points of Vampires (all painted), it's all painted to a quality that I know, 1 year, 2 years, 10 years down the road, I'm still going to be happy with.
I mean really bottom line is this: the amount of time and effort you want to spend on the army is your choice and no one can call you out on it and force you to work any harder or longer than you want to. But know that the quality and caliber of the army will reflect the time and effort you spent on it.
DV8