system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5 Why do we still have allergies if humans have lived around plants for a long time?
gpt
So many things. So many, many things.

For example: You can be allergic to plants that are not native to where you spent most of your life. There are people who are allergic to pineapple. Bananas.

If it doesn't remove you from life, and you have kids, they might inherit the same allergies.

Emergency medical care often saves people from anaphylactic shock.

We have allergies to different things. To different plants. That's why many are seasonal.

It's a cruel world.