Things were not necessarily better in the past. As a minority I can attest to the "good ol' days" not being so good for everyone
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In sum: technology has allowed us to monetize information to such an extent that "bad" news far outpaces "good" news, and we are "wired" to focus on "bad" news.
Technology has made the world a lot smaller. In the past what might happen outside of one's country was not focused on much by the media.
Technology has also changed news in that MUCH more money is now associated with news-related issues. In the past, you paid one price for a newspaper or magazine, and got all the news they wanted to share. TV was "free", and you got as much as a station was willing to share in 90 minutes each day.
Now, it is all about the "clicks", the likes, the views, the followers. Technology has allowed that to be all monetized. Related to now 24x7 news cycles, the focus in more on "what can we do to keep people watching/clicking/social media-ing about us all the time?" Not just news organizations, it is the goal of anyone with a blog or social media account. The ones presenting the news have tended to become more "celebrities" with their associated income (and part of the news cycle itself) than letting the news take front and center.
As others have mentioned, bad news attracts more views than good news. So everything is in a "bad news" perspective. And there is a rush to get out "bad" news even before it can be verified. It is analogous to the political view of "never let a good crisis go to waste". IMHO 90% of what is presented as "news" is more "opinion", designed to generate revenue and/or followers.
Even good news is never shared without an element of bad news. For example, At times then the economy was strong, unemployment low, markets at all time highs, etc. there are still plenty of stories in the vein "not everyone is benefiting from this economy".
Overall, I think things are better. Few today would want to live in the true (not "glamorized") world of the past. The bigger problem I see, is the increasing notion of "things are worse for you because of what 'others' has done, and that is 'unfair' " or "things might be better for you, but things are a lot better for those 'others', and that is unfair"... which plays directly into peoples' insecurities and the resultant issues... but it keeps the clicks/likes/followers rolling
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