It's a clunky user interface, and it's ad-supported, but there are a few special-interest groups and pages, plus some local friends with shared interests, that make it worth putting up with for me. One key is that I use a browser, not a Facebook-specific app, so it's easy for me to just ignore it if I'm not in the mood.
In case you change your mind, there's probably a way to reset your password if you know what email address you used when you set it up, or you could just start a new account.
The link that X3 Skier posted goes to the Seaplane Pilots' Association page, which has an interesting discussion of the incident.