Why do bugs ALWAYS startle me?

whenever i c the tiniest spider i will scream and run across the house, they are so creepy, and if i c a dead bee in the pool, i will run back inside my house, heart pounding, all scared.. i will scream if i c a couple of ants.... is there any way to stop it? Why do they scare me? I'm not afraid of them hurting me, but the fact that they r creepy and they might touch me. lol