Once you realize that a vast majority of the complainers are just crybabies who can't handle change, you stop taking them seriously
infact they're more annoying than they are discouraging
I don't entirely agree with this assessment. Take myself for example:
When Civ2 moved to Civ3, I *loved* the changes they made (culture, unique units & civilizations, strategic resources). What diminished my love of Civ3 was that they didn't change it *enough*-the retention of boring Civ2 governments (after switching to Social Engineering in SMAC), corruption & pollution seemed to be poor decisions IMHO.
When Civ3 moved to Civ4, I again *loved* the changes they made (improvements to culture, substitution of pollution for health, civics, terrain improvements, religion, city maintenance costs, specialists & great people). Indeed, I don't think that there was a single change that I didn't like.
Now with Civ4 moving to Civ5, I find myself in the position where some of the changes don't sit well with me at all. The removal of health, culture wars, cottages & religion key amongst them.
Some things I absolutely love-like using culture to purchase Social Policies, being able to purchase tiles with gold, City-States, the even greater uniqueness of Civilizations & the removal of the slider being the key ones.
Some changes I'm ambivalent about-I like global happiness, but feel it should have retained its city-based component as well (so you can have a very happy nation overall, but still have 1 or 2 cities that are thoroughly peeved with you). I love social policies, but don't like the way all their benefits stack, I love the removal of the +/- system in diplomacy, but fear they've made things too obscure. I don't really like how they've made bonus resources less important than they were in Civ4, I'm also somewhat concerned that they've made gold *too* important in some cases.
So yes I have some complaints, & hope that further improvements are in the offing in future expansions, but that hasn't detracted too much from my love of Civ5. Its just that Civ4 was *so* good, in so many ways, that I can see myself playing both games-side by side-for many years to come (which wasn't true of Civ3 or Civ2

).
Aussie.