The poor may be poorer, but they have access to smart phones, climate controlled environments, better health care, etc.
The gap is wide (in wealth terms), but in living-life terms it is a better era than ever for everyone, rich and poor alike.
Even the best health care also can't currently cure many of the illnesses that harm quality of life the most, like depression or Alzheimer's, both of which are increasingly common.
Finally, what about hope? Life is miserable if you don't have hope for the future, and many people are feeling hopeless about climate change and other impending disasters.