Why won't facebook remember me?

Answer 1

Your facebook account should remember you as long as you were using the same computer and computer account. You may have been using a different computer account or different computer all together. If this persists, contact the facebook team and notify them of this problem.

Answer 2

Facebook will likely not remember you because you do not log on often. There may also be other people who log on to Facebook after you causing Facebook not to remember you.