why worship god?

[kılıç_mehmet]

Certainly. But if he does?

If it's the immature, malevolent, corrupt dictator of a god that Christians/Muslims describe, then we are royally fucked.
Thank fuck it's just a crazy religious belief eh? Otherwise I'd be concerned for the well being of not just myself but for the many good people out there.

Well, if he just requires your faith, and your worship, would you oblige him, or face his eternal wrath?
If I were hundred percent convinced, I would not dare to anger any God.
Besides, it's fair to say if we exist due to the whim of any God, we are equally replacable. Our goodness or evil deeds are completely irrelevant in the face of this universe. If God requires us to worship him, what relevance do good deeds hold if they are not done in the name of God, but in the name of others?
This is the form of thinking I was taught at a Qur'an school. One starts something by saying "Bismillah", or extended, "Bismillahirahmanirrahiym", meaning "In the name of God; The Most Gracious, the Most Merciful."
Meaning, whatever you start out to do, like eating, drinking, or work, you start with the name of God, in order to indicate that you do this for yourself out of doing it for God.

I think I'm kinda getting somewhere here.
Or when someone asks you how you're doing, you say "Elhamdülillah" instead of "I'm fine". "Hamd" means, praise, "in all praise to God", I am fine, is the word that most elderly, or devout people would say.
It's not about being good, or evil. It's about being good or evil due to your devotion to God. If you are about to do goodness, you do this out of your devotion to God. Else, if you do this due to your devotion to the people, it's all moot. At least, this is what I have been told. I myself have done mostly the quite opposite. Due to being a nationalist, I have to overlook any and all religious boundaries when my own people are in question.
However, when like...giving out "alms", you do so out of your devotion to God. Other than that, you can also give alms that are not a part of a religious commandment, out of your own pleasure and discretion.