One good reason is that you can try stuff that would screw your laptop. Whereas with a pi it's just flashing the card again. I used to work for a company that

One good reason is that you can try stuff that would screw your laptop. Whereas with a pi it's just flashing the card again. I used to work for a company that sold pi kits for schools, you could let 7-9 year olds try stuff that teachers and parents would not let them do to a laptop. Totally breaking a computer and fixing it again is a great experience, but not one you want to have on your primary machine