There are ways to securely backup private keys. Loosing your domain name is a far worse. Not only will you not get it back, but whoever owns it now will get al

There are ways to securely backup private keys. Loosing your domain name is a far worse. Not only will you not get it back, but whoever owns it now will get all your web traffic. In contrast even if you loose the private key, you could continue to serve any static assets signed by that key, and create a new private key for future assets. There would also likely end up being plenty of "phone-book" services where you could go and provide a new private key for your company. We already have some of these: Google (Maps), Yelp, Yellow Pages, etc.