Facebook made the decision for me yesterday. I declined to link all my profile data to business Pages, so everything I'd bothered to maintain was wiped out. It was clear I'm no longer part of their intended user base.

It's fine. I have no interest in participating in an ad network, so I wiped out the rest (friends, photos, etc) and publicized alternate contact info. Gotta keep the account for some of my clients' Pages.

Facebook was great for me ca. 2004-5. Now its goals and policies are very different. Maybe more people will get shocked away when tagging + image recognition start imposing on their family photos.