Don't you think the companies are going to use it to see how much it will cost them for health insurance if your genetically prone to some diseases??? You may be refused a job and they won't tell you...
The government may also want to get some of that info also to use against you and may make the companies submit the results to them... Then they can enter you in the crime database for future reference...
NOBODY needs to know your DNA profile... That's personal...