I think we all make a mistake when we focus on our material subsistence to guage how well off we will be in the future. People are capable of living in poverty if they have the bare minimum of things needed for existence.
What concerns me more is the values system of the culture and I see many warning signals that things are not going to go as well for us as we would like to hope. The quality of life is dependent on the personal quality of the physical, emotional and mental health of the people who comprise it.
No matter what shape the machine is in, if the people responsible for running it are impaired it is not going to function well. And we live in an extremely psychologically unhealthy society today.
I won't even mention the number of environmental disasters which loom on the horizon.
No. Things are not nearly as secure as we would like to believe.