Why do some those hold hayfever?

Are we not well adapted to environments near pollen in them?Why do some those hold hayfever?
because of allergies. dont most of us drink milk or chomp through peanuts, how come some are still allergic?
People inherit a tendency to be allergic, objective an increased likelihood of one allergic to one or more allergens (such as pollen), although they probably do not inherit a tendency to be allergic to any specific allergens. Children are much more predictable to develop allergies if their parents have allergies, even if with the sole purpose one parent is allergic. Exposure to allergens at certain times when the body's defenses are lowered or feeble, such as after a viral infection or during pregnancy, also seems to contribute to the nouns of allergies.
i hav it now aswell, i imagine our ammune system is weak,or any we are just allergic to pollon
because god hate us and wants us to suffer when it's nice outside

paint nails black

where did my folder walk