The rights-based argument for God goes something like this:
- Either rights are given by God, or they are given by the state.
- If rights are given by the state, the state can take them away.
- Having the state take away your rights would kind of suck.
- If God does not exist, he could not have given you your rights.
- Therefore, God must exist.
The first part is a false dichotomy; rights could be inherent. For example, gravity was not granted by God, but that doesn't mean the State could legislate it away.
The second part is an argumentum ad consequentiam, otherwise known as wishful thinking. Something can be true regardless of wheter or not its truth is inconvenient.