Similar feelings st the beginning of the 20th sentury... everything invented, nothing more to discover... bottom line, no body can predict the future and something amazing can be right around the corner...
Personally, I think the future is more predictable than you suggest. The standard model of physics has been stable for over half a century. New discoveries in physics typically don't throw out what came before - they make improvements that seem to be asymptotically smaller.
Of course it's always possible we discover something new and groundbreaking in the laws of physics, but given that we're having to spend billions of dollars on accelerators and telescopes, it seems less and less likely that we'll find things as cheap and as useful as electricity or semiconductors.
Looking at life now compared to life in 1967, there are many differences, especially related to computer technology, but there are also many similarities. We still have ships, trains, cars, and planes. We still have roads. We still have schools. We still have houses. We still have plumbing for water and waste. We still have electricity. We still have jobs and commutes. We still have governments and corporations and money. For the most part, the structure of modern life has been pretty stable. Of course we cannot know the future, but it feels safe to me to expect similar stability over the next half century.
Asimov has an excellent essay on the topic of scientific progress: http://chem.tufts.edu/answersinscience/relativityofwrong.htm
Of course it's always possible we discover something new and groundbreaking in the laws of physics, but given that we're having to spend billions of dollars on accelerators and telescopes, it seems less and less likely that we'll find things as cheap and as useful as electricity or semiconductors.
Looking at life now compared to life in 1967, there are many differences, especially related to computer technology, but there are also many similarities. We still have ships, trains, cars, and planes. We still have roads. We still have schools. We still have houses. We still have plumbing for water and waste. We still have electricity. We still have jobs and commutes. We still have governments and corporations and money. For the most part, the structure of modern life has been pretty stable. Of course we cannot know the future, but it feels safe to me to expect similar stability over the next half century.