Science?

A couple of my class mates have stated their negative views on science....
Their words echoed in my head today as I waited for my second CT Scan.

Would it be better that people like me, who need technology to possibly survive, not survive?
Without science we will have our green pastures... And black death... And superstitions.
Just like the majority of people think, science is horrible until it saves your life. When will we come to the realization that things like guns and drugs and technology don't kill, we do?