Humans are better off than ever, but the planet isn't. Thanks to humans bettering life for themselves, the earth is undergoing pollution, habitat loss, ecological collapse, mass extinction and climate change at a faster rate than at any point in the close to one billion years that animal life has existed. The rate is higher and in the next few centuries the scale may too transpire to be higher.
We are not yet anywhere close to the level of mass extinction that the planet suffered through 250 million years ago or even 65 million years ago, but whereas those extinctions took a couple million years to play out fully, the current mass extinction will occur over mere centuries, many orders of magnitude quicker, which will have dire ecological & climatological consequences.
The earth will recover eventually, only to then be wiped out when the sun dies of course, but for now we are on the cusp of a difficult few millennia for the planet and its inhabitants, and humanity will not be exempt. It's only a matter of time till the human population levels off and then begins to shrink, it will happen, nothing lasts forever.
Unfortunately for the Christians and Jehovians hoping to be saved, God is a mythical character, so they are out of luck.