Often I hear negative remarks about the state of humanity, culture, and the world.  I'm not saying there are not some deep serious issues that need to address, but I also wonder, "compared to what?".  Watching something like Star Trek can feel we are in a terrible state, but historically speaking the 21st century is the best time ever to be a human.

Some of these improvements are lost on people because they individually, or even as a community, have not seen the same type of increase in quality of life that many parts of the world have enjoyed. Also, good news tends to be trends over time, while bad news is event based and gets focus altering our perception.  We have plenty of work to do and a long way to go, but I'd not want to be born any sooner than I was.

According to most of these charts there has been a mild decline or a plateau in most of these fields. It'll take years to see if the plateaus are a exception and not the new normal.

But I'm not concerned. With Trump in charge? The "Golden" age is just beginning.

The mild decline is in part because the west is declining in population/birth rate have dropped, whereas population growth/high birthrate is the highest in underdeveloped areas, where there are no schools, doctors or vaccines.

It's not the best time to be anything else in the planet, though. Your "best time ever to be human" coincides with:

The largest mass extinction in 64 million years; dwindling populations precisely were people are better instructed, and nurture more democratic and environmental values; soaring crime rates elsewhere; a boom on depression and other mental ilnesses; and lower growth than anytime in the last 100 years; slower technological progress, despite popular belief (held as such even by someone like Elon Musk); an increase on genetic diseases; top soil degradation; and possibly the end of antibiotics in the coming decades.

Not to mention the "democracy" graph seems misleading. By 1900 almost every country in Europe was a constitutional monarchy, and Europe had over a third of the world's population by then. I would wager the average citizen felt better represented than many people today at certain south american or african countries that might be deemed "democracies" on that graph.

Well those graphs only cover the last 195 years, while there's about 200,000 more years of humans before that so who knows when the best time really was...

most of it is thanks to China and global inequality has skyrocket

Umm... how come global unequality has skyrocketed?

But how can it be the golden age of humanity if Scalebound is cancelled?????

The "present" will always be the best age of humanity. Until we reach the point where we doom ourselves, that is. (Nuclear war? Global warming? Lack of resources?) But until then, it is always the best time to be alive

Sorry, but no.

First, the level of "democracy" in most European countries at the beginning of the XXth century would be ridicously low for today standards. Even in the most advanced democracies large percentages of population (all women, for example) were unable to vote, and in most countries the Governments had semiauthotitarian powers in order to avoid the Parlamentary rule. Indeed, even those who could vote would face in many cases a very controlled electoral system with a great degree of fraud. Modern constitutional states wouldn't start to work until the end of the Great War and, later, the II WW.

Also, I suppose that you're counting European colonies as part of Europe... Sadly, people in those countries didn't have any democratic right, so they weren't represented at all. Usually the colonial powers exploded local population with the same institutions that would later be used - and sadically perfectioned - by African dictators.

Finally, about the South American note... Do you really believe that the democratic degree of South America hasn't increased. I know the political situation in Brazil is not optimal but I think the situation is still miles better than not so many years ago, without voting rights and with constant violation of human rights... The same goes for Argentina, Chile or most countries in the region.