I think not. Yes, a superbug will eventually wipe us out. As we make cures, the bug evolves, becoming stronger than the cure. Not to mention the more we take these 'cures' / antibiotics etc.. the weaker our own immune system becomes. We need to battle and defeat these diseases to become stronger. Issue is most people just pop, get some anti biotics, let them fight the disease and stay weak themselves. This then goes through generations / genes and some people become super weak as their genetics just don't have strong immune systems.. These people then get ill, pass it on etc.. people take antibiotics because it's bad then no one ends up becoming slightly immune to the diseases...
It's a circle that will only be broken be either, a wave of super immune systems (doubtful), or a super bug.