You can't judge inventions this quick.  It takes 25-50 years to determine how important an invention is.  The reason is that infrastructure has to be allowed time to develop to take advantage of the invention.
Examples:
electricity.  It took 25+ years for it to be financially viable.  Infrastructure had to be completely updated to move the electricity and to figure out what uses it had.  So them you get things like electric ovens, non-gas lamps, etc
Automobiles.  It took at least 10 years to automate their manufacturing process, and even more to update roads from dirt/mud/stone to asphalt and concrete.  Then tires had to be updated, gas had to become widely available, parts had to come down in price.
Internet.  The government had this in the early 70s, at least several clandestine agencies did.  But servers had to be able to handle immensely more processing and storage power, devices needed to be redone to take advantage of the power, and people had to develop meaningful uses for it, with communication seeming to be the one connecting factor.
My guess is that energy, food and medical inventions are due to come soon.  Need tends to drive inventions, and the need over the next 100 years is going to be to handle huge population increases.  There is less disease as a % of population, less death from wars as a % of population, and people live a lot longer.  So, handling that means new ideas to feed people, lower resource consumption, and keep new diseases from developing.  And developing the infrastructure to roll these changes out to the world will take time (ie natural gas or electricity to vehicles, gene reproduction centers for food, etc).
This may sound a bit Star Trek like, but I think finding energy that can make space exploration really feasible (ie faster than light speed and beyond our solar system) will come eventually.  It may be 200 years from now, but I think it's the next absolutely huge difference maker in the way we view the world.  I guess my great, great, great grandkids will laugh that I had never been away from the Earth and that people believed in gods, etc.  Just like we laugh about the ancients believing in Sun gods and never leaving the 15 miles around their homes