The presumption I used to have was that nostalgia was my elders' version of the drugs I was doing. For them, it was absolutely deleterious nonsense and they should be sheepish about it. Now that I am myself an Elder, I see that nostalgia was a crutch for these weaklings - the weaklings who fashioned brick by brick the hideous world we must endure. By comparison, my own nostalgia is carved from marble, a material thing, and represents the weight and precision of fact.
The most formative part of my life was spent in a kind of ahistorical interregnum. Many people were under the impression that history was over, and from where they were standing they could certainly make a case. I think it's sorta beyond debate that many things were better, but I am a gentleman. Let's tart it up linguistically, if that will help. Would it be better to say that this previous era was different, and that some of these phenomena could be said to have degraded since?