I always loooked at it from the arachnid standpoint, we dont like spiders, they tend to frighten us, so out of some sort of reflex we usually try to kill them, but spiders are the ones that keep the populations of other far mor harmful insects in check so its usually advisabel not to kill them, since 99% of the time they will live people alone and dont even eat our food. Besides we all know its bad luck to kill a spider.
I always loooked at it from the arachnid standpoint, we dont like spiders, they tend to frighten us, so out of some sort of reflex we usually try to kill them, but spiders are the ones that keep the populations of other far mor harmful insects in check so its usually advisabel not to kill them, since 99% of the time they will live people alone and dont even eat our food. Besides we all know its bad luck to kill a spider.