Because, according to ICANN rules - you may lose the right to your domain if the registrant information is falsified. That's why they "spam" you once a year, r

Because, according to ICANN rules - you may lose the right to your domain if the registrant information is falsified. That's why they "spam" you once a year, reminding you to keep the registrant information up to date. I have not heard of anyone losing their generic TLD in a random check, but the risk always exist.