I've got to take issue with you there. DISCLAIMER: I work at the LHC, and am therefore an evil, untrustworthy scientist.The Maddest March Hare said:I don't dislike all science, just some of it. Mostly the size and use of the budgets. Look at the LHC. What do we get out of it if it works? Scientists might be able to say they've found a particle that doesn't really affect us, they can just confirm/deny a few theories of theirs about the formation of the universe.
Now imagine what we could have accomplished if that £2.6 billion had been put into cancer research. There are thousands of charities out there getting practically nothing while the Higg's Boson research gets now coming towards £3billion thrown at it with glee.
1) The amount of money that gets spent on cancer research is staggering. I don't have any figures to hand, but the US medical research budget is at least one order of magnitude greater than that spent on "pure" science. Also note that that's an entirely separate set of funding from charity funding.
2) While the discovery of the Higgs Boson itself is indeed unlikely to produce any practical benefits any time soon, the field of particle physics has produced some significant medical advances. Research into particle detectors has lead to the design of medical apparatus such as the PET scanner (used in cancer research amongst other things). Also note that the PET scanner works by detecting antimatter particles, which ~60 years ago were as hypothetical and impractical as the Higgs Boson is today.
3) Particle accelerators like the LHC (admittedly at much lower power) are directly used in cancer treatment. "Hadron therapy" works very much like radiotherapy in the destruction of tumours, except that it can be much better targeted, reducing the damage to healthy tissue. Research into the design of particle accelerators is driven by big projects such as the LHC. The LHC itself and other particle accelerators are also used to produce radioisotopes for medical purposes (including cancer treatment).
There are lots of other things I could write, but this is the most direct way of addressing your "cancer research" argument.