One day decades ago, my missus and toddler daughter were motoring through a mall parking lot. Darlin' Dotter says, "Look mommy, a pidey." Sure enough, and right on the seat beside her. Mommy shrieks, jumps out of the car, and a passerby luckily jumped in, popped it in neutral, applied the emergency brake and killed the spider. Darlin' Dotter was unharmed. In her defense, my wife's brother used to alleviate boredom on the farm by using a stick to capture a bit of web with a fat barn spider on it and chase his sisters around the green house. Sooo, I take no chances. Spiders are given a fair trial, then executed. I have a response to the all life is sacred theory, though it has not won universal agreement. A positivist would note that God creates more spiders (snakes, wasps ...) than he could reasonably expect to live to a ripe old age. So it could be part of God's plan for us to cull (harvest? Ha ha) the excess, those being the ones that cross our paths and disturb the peace.