WTF indeed...! The Hadron collider will not create new universes nor will it destroy the earth. It just smashes subatomic particles together at very high energies in order to let us understand the nature of physics and conditions present at the time of the "Big Bang" 13.7 billion years ago . It's 27km (17 miles) in diameter and is a marvel of engineering. It's recently proved that the "Higgs Boson" and therefore the Higgs field exists, which confirms that the standard model of physics is accurate. This is pure and fundamental science: Exploring the nature of reality. How will it impact our lives? Who knows? I do know that one discovery of a subatomic particle has changed all of our lives: The electron, well over a century ago.
To point to anything (particularly fundamental scientific research) and say "Why spend money on this and not <insert cause here>" is specious. Point to war and the military industrial complex if you want to point to an area of massive spending, waste, and fraud. If anything, science needs more funding not less. The discoveries made by pure research has and will enrich our lives in so many ways. Think of X-rays to let doctors and surgeons see where and how a bone is broken. Penicillin. vaccinations. electricity to the home. The number of inventions that came out NASA that we use every day is amazing: Invisible braces, scratch resistant eye lenses, memory foam, ear thermometer, shoe insoles, long-distance telecommunications, adjustable smoke detector, safety grooves on runways and roads, LED's, thermal blankets, improved radial tires, chemical detectors, fire resistant materials, freeze drying, water purification systems, solar cells, pollution control devices, powdered lubricants, MRI for medical use, quartz clocks, teflon, velcro...