I'm the opposite. I can squash a spider. It would take a massive nest of them to scare me. But snakes...I know too much about them. Many are faster than me. Some of them have venom so strong you are dead or headed that way before your brain consciously registers you were bitten. A rattlesnake bite happens in a blur, but it takes the time to chew a bit to work the venom into your skin...but it happens in a blur. You barely see the bite happen, but it stopped to chew.
And moving without limbs the way they do just creeps me out. In a worm you can see them pull their back forward and then push their head forward. It is a visible, methodical form of locomotion. A snake is, smooth, quiet, and stealthy. It is not natural looking (yes, I see the irony in that statement).
A guy I once worked with raised snakes. He even contracted as a snake catcher so he could get new pets. He had pet rattlers, copperheads, and cotton mouths (our three native venomous snakes) and I thought that burning his house down sounded like a very good idea.
I'm not so bad that I won't touch one someone holds out for me, but I will never hold one myself.