Your local sociopath, the one who never says hello to anyone, just remembers the good old days as being barely tolerable.
The bloke that you might see in the pub, or on the train, or walking past the house, but has a name that always escapes you, so you refer to him as Mr Waistcoat, or Mr Yellow Shoes doesn't remember the 1960's, 1970's, 1980's, 1990's, 2000's, or 2010's with any form of kindness.
'No, it has always been pretty much the same greyness, with no joy, just monotonous tedium'.
We don't need to tell you this, but if he was invited to parties, he would suck the joy out of them.
If you don't know anyone that fits this description, it is you.