The reasons for keeping your info private could populate an entire chapter of a book on internet marketing.

Believe me, if you have one or two sites, it's no big deal, but when you get 100+ sites, the the privacy becomes more crucial, if for nothing other than the spam you are going to get.

And spam is the least of your concerns.

If someone decides(Google) that they do not like what you are doing, the easier you make it for them cross reference ownership, the easier it is to lose your entire business.

As I said, 1 or 2 sites, no big deal.

If your whole future rides on your continued business operations, it's a very big deal.

Roger