Many home buyers don't have much experience with the inner workings of a house and those that do probably won't subject the home to a thorough inspection. The home is made up of some fairly complex systems.
If I'm buying a house, some of the things I would want to know:
Would you let your children watch television in your basement if you knew they were being exposed to dangerous levels of radioactive gas? Would you work in your home office or let your teenager sleep in the basement knowing that you had unhealthful levels of radon gas in the basement? Of course not, no one would knowingly expose loved ones to potentially fatal health risks that can be easily and inexpensively identified and remedied. If you don't test you don't know.
