This is an argument from consequences. You're saying, in effect, "God has to exist, since if he doesn't, then rights can only be granted by other men. I don't want that to be the case. Therefore, God exists." I'm sure you see why that doesn't hold water.
In fact, as a practical matter, rights are only taken or protected by force wielded by man. I'm not aware of any God ever coming to the defense of anyone's rights -- at least not in any verifiable fashion. Instead, we routinely see humans denied their rights. That's been the case throughout history. Whether rights exist or not in any sense is moot if they're not backed up with force or the threat of force.
While you're correct that there needs to be some "first cause," the assumption that it must have been an intelligent God is unjustified. It's possible that the "uncreated creator" of the universe is simply the laws of physics, or maybe even some other perfectly natural phenomenon that humans lack the capacity to understand.
There's a book on this subject called A Universe From Nothing by Lawrence Krauss. I haven't yet read it but plan to as soon as I get a chance.
The truly logical position on this question is agnosticism. Humans simply don't know where everything came from, and we may never know. Everything may have been created by some kind of God -- perhaps a completely impersonal one who's nothing like the anthropomorphic God portrayed by the various religions. Or everything may have been created by a self-existent but natural entity that "lives" outside our universe. We just don't know, and that's uncomfortable for many people to accept.
Religions are rooted in the ancient attempts of man to come to grips with things he didn't understand. Just as lots of people today are "sure" that a personal God exists, people were once certain that witches were responsible for their crop failures and cattle dying, that people with epilepsy or Tourette's syndrome were possessed by demons, and so forth. But as science revealed more about how nature works, the role of religion grew smaller. Its only refuge now is in questions that science still hasn't answered, such as the origin of life and the universe itself -- though there are some plausible theories out there about these things.
Thread: Filing as an...Don't be a dissident troll.) and realtonygoodwin (Thread: I almost became a fan...Don't be rude,) 
with the exception of returning to Constitutional mandates EVERY thing else is a "bullshit circus three ring, circus sideshow." To coin a lyric. 
