Don’t take my word for it, check out the all the requests on Facebook for aid in restoring their OLD Facebook profile.
The list is MIGHTY long and is only saved by how users keep starting new threads on the Facebook community help forums. Below is a screenshot of a single thread complaining about the new “feature”. I don’t know where Facebook gets the idea that their users LOVE this feature, but for all those who’ve accidentally opted in, they’re desperately trying to opt OUT.
Perhaps this is what all the other social networks have been waiting for, the one dangerous fatal mistake that can cause Facebook to fall off the top.
If you haven’t activated Timeline yet, I don’t recommend it. If Facebook decides to make this permanent, I WILL switch to a different social network, probably Google plus.