childhood fears

when i was a kid i was always scared of spiders. ok so i still am today. but it seems kind of silly because spiders are so little. i mean why are so many people scared of them. you can just step on it and it will be dead. but i am terrified. you would think i would because i am so much bigger than a spider. spider arent even really that scary all they do is crawl around and make webs and eat bugs. i honestly dont see why i am scared of them i guess i will never know