[Jtsummers]

Per the article the success rate in the first Gulf War (properly adjusted using the Army's actual analytical methods and not wishful thinking) brings it down to a 2% success rate against systems it was essentially designed for.

Various versions of the system are being deployed as countermeasures for missile systems that Patriot is not designed to work against and so likely has a very low success rate. And, if your countermeasures end up turning around and hitting your own city all it does is make the enemy's attack even more effective:

  One interceptor explodes catastrophically just after
  launch, while another makes a U-turn in midair and then
  comes screaming back at Riyadh, where it explodes on the
  ground.

I'm optimistic I can catch a falling blade by the handle one time out of a thousand, doesn't mean I want to destroy my hand with those 999 failed attempts.