Glass half full or empty kind of question.
There's a lot of good and bad around you, and depending on how you choose to focus your energy, you can make the best or worst of that. I think the human race has been doing fantastic as the years have progressed by any measurable metric.
The concept of Declinism has come up before, and the consensus is that the world has been improving over time. There are lots of articles on the subject, and we tend to re-visit this every decade or so.
If I had to boil as many problems into one solution as possible to make us all happy, I'd say it's education. The more people are able to properly educate themselves on any topic, the better off we are.
In the end, it's more productive to focus on problem solving and being happy, imo. Keep relationships strong, try to look at the glass half full, and we'll all be alright.