Well, there are literally HUNDREDS of reasons.... You should really research it. Here are just a few cool things that help us out everyday:
•Lifeshears -- A rescue tool which quickly cuts debris to free accident victims, using the same power source used to separate Solid Rocket Boosters from the Shuttle.
•Breast Cancer Screening -- A silicon chip originally developed for NASA's Hubble Space Telescope makes the process less painful, less scarring, and less expensive than the traditional biopsy.
•Grooved Runways -- Now applied to highways, this water-draining innovation has led to an astounding 85 percent reduction in highway accidents.
•Attention Getter -- Techniques used to measure brain activity in NASA pilots are being used to improve attention spans for children with Attention Deficit Hyperactivity Disorder (ADHD)
Have you ever used a cordless power drill? Yep, invented for the Apollo space program!
How about a "Dustbuster"? ...... That was in space first too...
Home Smoke Detectors! Honeywell invented them for NASA's SkyLab in the 70's....
Some of the best house insulation (with a thin, aluminum vapor barrier) was invented for NASA.
And, we won't even get into what satellites have done for us.... Personally, militarily, and commercially. :dontknow: