No. There's not a god. It's stupid to believe in one, in this day and age.
That's false. In your scenario, you don't say where the watchmaker came from. If everything has to be made by something else, where did your watchmaker come from?
Saying that God must exist because we don't know what made the big bang happen is a stupid thing to say. There will be no second coming, atheists are right, and you do realise you're violating part of your religion, right? You said you pray to gods. Plural. The Christian god is a jealous god, apparently. You're only meant to worship one god, and that god is him.