Why do we fear primitive living creatures, especially worms?

Writhing worms and bugs are often disease carriers, and sometimes venomous. Some worms and similar creatures can burrow under your skin to lay hundreds of eggs. Maggots and similar larvae can then eat you alive from the inside out. read more

It's because someone freaked out at worms etc. when we were kids. With my kids, I walked over to a praying mantis and picked it up and said "cool" and within a minute my kids wanted to hold it. I did have to let them know that some spiders and other things could bite so watch out but they seemed to follow my lead with the whole freaking out or not reaction. read more

Some worms and similar creatures can burrow under your skin to lay hundreds of eggs. Maggots and similar larvae can then eat you alive from the inside out. The fact that they appear disgusting to us is an evolutionary survival instinct that embedded itself in our brains long ago, warning us to stay away. read more

adult worms live in intestines of vertebrates. Larvae (one exception) live in tissues of some alternate host. read more