The use of prophylactic antibiotics in animal feed - the major use of antibiotics - has already produced deadly results.  The superbug problem will get worse before it gets better, and solutions might not be available soon enough.  

Although it seems hard to believe, some of us could lose loved ones or our own lives to an MRSA infection.  PBS provides an account of the problem here: 
http://www.pbs.org/wgbh/frontline/film/trouble-with-antibiotics/