Isnt it just mythology that god exists? No.
Didnt an explosion of atoms create the universe and not a god? No.
Isnt god a fable like santa claus? No.
Why do people continue to think god exists? Because God does exist, and you could know that for yourself if you would repent and be baptized in the name of Jesus Christ for the forgiveness of sins. God would then fill you with the gift of the Holy Spirit and you would know that He exists, just like we know it. (see Acts 2:38)
Doesnt reason tell us its not true? No, reason tells us it is true. It is utterly unreasonable to believe it all just happened by an explosion of atoms.