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homosexuality
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Chickenpox
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Probably AIDs or the human papillomavirus
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Testicular Cancer.
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Sanginuare Vampiris Dat wasted opportunity.
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idiocy.
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Stupidity.
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Cansorz.
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HIV-AIDS
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Erectile dysfunction
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homosexuality
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All types of cancer.
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Mental illness.
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HIV/AIDS or Syphilis. Make sexy times a bit less deadly
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Does depression count as a disease? If not, Cancer.
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Malaria; it's a huge issue, especially in developing countries. There are roughly between a half, to a million (known) deaths related to the infection yearly, with 219 million documented instances of infection in 2010 alone.
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Obesity.
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Aging.
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I'm going to be super original here and say pestilence. Or whatever biggest pestilence problem there is. Therefore allowing more food to be produced and a better change at feeding the world.
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Malaria
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The cold.
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Greed, all the rest naturally follow.
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Heterosexuality. They produce 100% of stupid people.
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Death.
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#Destiny, too many fanboys.
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Stupidity