Maybe we just have the same questions and no one ever found the answer.
Maybe because we don't understand what our ancestors already knew.
Maybe we have the answers, and we just haven't put forth the energy required to actually understand what is in front of us.
There must be some other reason for us to be interested in what has happened to our families in the past.
Go to http://mormon.org/family-history/ for more information.
http://new.familysearch.org/ is also very helpful for doing Geneology.