If I have a worry, it's not  a failure of technology, it's more a failure of craft. As we have replaced lower level technologies with new improved energy dependant technologies,  we have lost the knowledge of how to do things without the energy input.

My worry is that we are facing the future something like Wylie E Coyote and at some point we will have  run over the edge of the cliff and be standing in midair without the tools to work back up from a lower level.

that's at the limits of technofear though.

Any idiot can face a crisis - it's day to day living that wears you out.