Species such as house spiders and cellar spiders pose no health threat to people. They don't have very strong mouthparts, so if they tried to bite, they wouldn't be able to pierce the skin. These spiders are simply nuisance pests, but they are much better off living and laying eggs outside.
Being proactive about spider control will reduce the likelihood of any species making a home in your abode and possibly harming a member of your family. But if you suspect you have a spider infestation in your home, as to identify the species and properly remove the pests.