If a random series of events that will someday be referred to as "Pure Dumb Luck" humanity matures sufficiently to find new hobbies beside killing each other , and polluting it's own environment to amuse itself our future could be bright.
Unfortunately we mature rather slowly, learn from our mistakes at a snails pace, and are seriously addicted to our hobbies= Sex and bloodshed. When you learn about the great apes and how they conduct their society when left alone, it is down right embarrassing to look around at our own efforts at "civilization". Half of us are fat and the other half suffer from malnutrition and starvation. Some of us live in mansions with armed security while some of us curl up under a dry culvert for the night with only layers of cardboard to insulate us from the ground.
Most of us are fortunate enough to have a home of some sort. The roof may leak a little and the floors may creak when you walk on them but we consider it our "palace" and our most valued possession. A place of refuge from the cold and the insanity. I think it is fair to say that this is where we draw a line in the sand and we will defend it with our last breath.
I have been homeless, I have been hungry, and I have been alone. Never take what you have for granted because it can disappear in an instant. Someone dies, a divorce, an illness or injury, you lose your job and can't find another one quick enough to stay afloat. Lots of reasons it all goes to hell. No one to blame, nothing to feel guilty about. Shit happens!
Try and think about that after your next good meal. Try and think about that when you lie down on your comfortable bed. Try and remember that when you kiss your mate goodnight!