Not necessarily - I think it depends on what you expect and want from Facebook.
I've reconnected with friends that I haven't heard from in 20+ years, and family members that live elsewhere that I've been happy to get to know a little better.
Plus, I'm in the middle of a long-distance relationship right now, and it's a way for us to "chat" live when we're also doing other things, where the phone isn't as convenient or necessary.
And I've gotten to know a number of O Board members much better through FB as well. Some of which will remain lifelong friends.
For me that's worth the inconvenience of a few emails, which are sent to an address that is used for stuff like this (and buying from amazon, etc). Those get deleted like the rest of the spam.