I have a rule, if they're too big, or in a bad position, they go outside, otherwise I leave them, I prefer spiders to mosquitoes
Anything roaming near the kids' bedrooms gets treated more harshly.
Cellar spiders are now my best friends. I didn't realize until then, but you can actually pick them up by hand and they don't bite if you're gentle.
I thought my kids not to be afraid of them and they handle them regularly. My wife is another matter and she has a very distinctive spider scream that I can hear from anywhere in the house.