How is it that I don't get it? I can own my own domain and still use Google+ to power my blog just fine. I can automatically backup and store my Google+ posts i

How is it that I don't get it? I can own my own domain and still use Google+ to power my blog just fine. I can automatically backup and store my Google+ posts in case Google goes nuts. In the process of backing up those posts, I can also store the Google+ ID so I can ensure that I can always keep my back-links intact. Whats the problem?