Come on guys - they are only spiders. The one we were weary of in Africa was the Black Widow spider whose bite could be deadly to vunerable humans, but they were not aggressive, so only bit if they were under threat. The only real danger with a Black Widow was the male counterpart who usually gets killed and eaten by her after mating - nice!
By far an large they were treated as friends, and the only time you removed old cobwebs inside your home is when they got a bit dusty - otherwise they trapped mosquitoes and other insects which were potentially more dangerous.
Spruce