Bugging Me

Okay, first off, I don't want to provoke anything by this. I do not want any stupid "intelligent" debates, discussions, etc. I am asking a question. I'd like an answer.

If there's no God, where's morals?

I do believe fully in God and Jesus. Heaven, sin, hell, angels, all of it.
But, other people don't. And what if they're right?

Well then, I don't see why it should matter if I decide to steal a pack of gum at 7-11, or download all my movies and programs illegally.

I don't see why it should matter to me, if I murder someone else because something they said ticked me off. Or if I never censor my language. Or if there's people starving halfway around the world.

Without some sort of higher power, whether it's Jesus or something else, it seems to me to become very me against the world. I'm going to take all I can get before I die and become eventually forgotten.

I'd really just like to know.
How do morals exist? What's right? What's wrong? IF there's no God, no one to define it, who's to say? The government?

So if the government were to define what's right and what's wrong, then that's just other people defining right and wrong.

And if other people define right and wrong, I can define it.

So then defining right and wrong becomes personal.

I don't know, maybe this is built on very unsolid arguments.
But I still think my question is valid.