I am not looking for a cop out, honestly, and if I need a brain exercise, there's always Soduku!
There are several main reasons for my belief, the origin of everything being but a part of those reasons.
Others are:-
The Bible best describes the human condition, in my opinion, in a way that a variety of religions and philosophies have blatantly failed to do.
An ideal Christian situation, straight from the chocolate box picture of course, is a family involved in church, Sunday school, and the community, above suspicion and respected by all. These are the bricks that have helped to build our society over many years, even if under threat now.
Bible prophecies concerning the end times are remarkably congruent to events taking place right now in the Middle East. So, all in all, there is enough there to convince me that the revelation of scripture is true and reliable.