I expected something more substantial than complaints about bottle caps from a thread titled "Things I dislike about modern society." I take it we are trying tip-toe around anything that might be taken as political? I will try to stick to things that are equally recognizable from any political perspective so nobody feels singled out.
My gripe about modern society is that it is falling apart. We are going the way the Romans, the Huns, the Babylonians, Mayans, et. al; every great civilization that has risen under its own power, has fallen under its own power. They aren't defeated, they self destruct. I think we humans only ever truly thrive in opposition to some foe/ opponent/ boogeyman. We build a civilization running on the fuel of opposition; we conquer, commandeer, assimilate everything and everyone in reach, and once that fuel is exhausted, once there are no more credible threats to the civilization, it loses its purpose. Without a "them," there is not much point in a "us." Without an opposing force to unite against, we don't unite very well.
The United States are not behaving in a very United manner these days. I suspect that also applies in varying degree to other western countries (Australia, et. al). We haven't had a good war in a while and it shows. We are dividing and (seeking to) conquer ourselves. We grow bored without a boogeyman to oppose so we make boogeymen of one another.
The left grows further left while the right grows further right, leaving a wasteland in between that few are brave enough to occupy since they end up being hit by stones thrown from both directions.
We invent "hot button social issues" and hurl the most virulent insults imaginable among the commotion they cause. We have worked ourselves out of quite a few jobs so there is plenty of free time to be spend dreaming up new and inventive ways to stir the pot.
The economy gets worse every year so folks are getting increasingly hopeless, disgruntled, and harbor more resentment against their fellow man (especially those who are better off).
This general societal malaise manifests, among other ways, as a growing desire to throw off norms, buck the system, fight back against tradition. Just for the sake of doing that. Even at personal detriment. I'm all for it if it makes sense but the things I've been seeing haven't made any sense for a while now.
We have cancer. I'm not saying we should start a war to cure it, but... a war would probably cure it (temporarily).