Those people bombing hospitals are also evil. Stopping them from bombing hospitals wont stop babies from getting cancer. There can be (and are) multiple evil things and beings in life.

You seem to have forgotten the context of the comment chain. The grandparent comment of your comment that I replied to said that if Christ returned, the commenter would instantly convert. Christ returning would strongly imply that Christianity is correct. In Christianity, God is all knowing (omniscient) and all powerful (omnipotent). Being such a powerful god, if He doesn’t stop babies from getting cancer in the first place, He is either evil or impotent.