Cure for cancer or cure for aids?

This is what I was originally going to post as my question. I realize the money one was stupid but this one is a bit harder to choose from in my opinion. But I would still choose cure for cancer since that one is more prone to get and my great grandmother passed from it.

But I want to hear why you think one is better to find a cure for than the other.
Cure for Cancer
Cure for Aids
Select gender and age to cast your vote:
Cure for cancer or cure for aids?
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