Let's Talk About Nostalgia

Everyone's talking about how they think about the old days when everything was better back then, not just 70 year olds about their younger days but also even adolescents about their own childhood. They seem to feel a sense of comfort and longing for their past experiences. They say it's to have a better understanding of the world around us. These same people also tend to assume that everyone else in their era thinks the same way as them or else they must have lived under a rock. And it appears that some of them are living in an actual rock, as in not being interested in discovering or doing anything new, because at least they still have their old stuff to hold on to, and it is so much infinitely better than the new stuff today. This description depicts, or at least attempts to capture, what the feelings of nostalgia are about based on varying perspectives.
Now, it's one thing to want to rely on your past memories to feel secure and sane. There's nothing wrong with that. But it's another thing to define yourself by them to the extent that you don't agree with anything new that challenges your views. And that's where it gets problematic. You may be encouraging people to not cope with the ever evolving trends and technology, but instead to dwell on the old stuff, to focus on them, to constantly feel like the trendy people don't get you, as opposed to dealing with things as they are, processing it, and moving forward with life. Now, we get it. The world changes a lot with every year, especially with social media and artificial intelligence. There's new kinds of movies, music, and other forms of entertainment with every year that passes by. Your generation might die out in the future. A lot of things in the future come in unexpected. It can be surprising and foreign, and nostalgia may be dreamily comforting against all this, but in this instance you have to get over it. You have to start moving forward.
Furthermore, not everyone shares the same experiences as you. Some people have had to deal with wars, poverty, and other traumatic events. The vast majority of them would like to get away from their past and focus on their future, even if it seems they can't. There is no reason or benefit to be hung up on the past when everything and everyone inevitably changes around you. Anything can happen in the future. We might even have a nuclear world war or a type of apocalypse soon. Are you still going to be clinging to the past at that point?
It would be more beneficial for everyone to use their prior knowledge and experiences to create something new and original and potentially influential. Do that. Don't rip off old ideas just to brag about how better they are than new ideas. Do find comfort in your past, but don't shove it down the throats of people who may disagree with you. Do find inspiration in your youth, but don't act like it's better than everything else you don't like. There's always bound to be something better anyway. Nostalgia is good in moderation and in a way that doesn't put off the audience.