Go back to any random year in human history and ask the older people whether they think the world was better when they were young. They will all say "yes" (evidence for this exists in countless survived writings, as well as other social phenomena like people becoming more conservative as they age). It's one of the most natural things in the world.

That alone should be a very strong signal that maybe your nostalgia is not based on a rational unbiased observation of the changes in society.

edit: and to be clear, obviously there have been times in history where things really did get worse for a period. But if you're proposing that that's happening now, you have a massive burden of proof to overcome, and you should be absolutely really totally sure that you're not being influenced by rose-tinted glasses. Which I'm not even sure is possible.