ace,

Chemo can have terrible side effects but it doesn't kill. In fact, as sideblinded says, it can extend and even save lives.

It's understandable why a lot of us see chemo as the enemy and not cancer--it takes a while for cancer to have visible negative effects while chemo makes the patient sick right away. But without chemo, the cancer takes over.

Is it possible for you to talk to your dad's doctor about your concerns?

I wish you and your dad well.