Modern medicine as you know it would be impossible without effective antibiotics, Period. 
 So someday you may or may not get some disease from a seagull if you wash your hands with soap and hot water. You might stop that burning in your urine flow with sulfa drugs. But if your bacterial flora: some good, some bad, that lives on you, in you, and all those bacteria everywhere around you, receives that resistance gene from some other bacteria. One better hope that an antibiotic is available that's efficacious.