Apparently that's a very possible future: http://www.bbc.co.uk/news/health-21178718
Bacteria deceases are becoming resistant to antibiotics because we're using too much of the stuff for nothing. There will come a point when most of our medical achievements will be useless against these "super bugs". I believe this was already mentioned by the WHO in 2011, but this fresh warning prompted me to share it.
I'm noticing a pattern here: Man receives gift/resource. Man abuses gift. Gift kills man.