A future that's allergy-free? Could you imagine a future world where there is no such thing as allergies, the common cold, or even migraines? A new poll finds that people who suffer from these ailments right now are so optimistic about advances in medical science that they believe these things won't be a problem for anyone 100 years from now. 62% of people surveyed said they believe these common ailments will be totally cured. But today, people are suffering, and two-thirds say their allergies have gotten worse over the past several years.