Scientists observe the laws of the physics but, Where do they come from? Has anyone ever considered how the laws of physics that we study came into being.
 A: Actually...
There is a branch of physics that attempts to answer that question. It's called Physical Cosmology. Among many other things, cosmologists want to know why the physical laws are as they are. The trouble is, there just are not that many other universes ready for us to compare. We also don't know what is going on with most of our universe, like with dark matter, and that takes up most of the scientific community's time.
A: Based on what we know, both from science and philosophy, these are both ill-phrased questions. You can get as many answers to them as you like, and they will all be equally meaningless, because none will bare any logical relationship to known facts about the universe we live in. 
Now, there are much better question along these lines, which deal with the reason that we can find laws, at all. "How do we know that nature is reproducible?" and "Why do we assume that there is an objective physical reality?" would be some of these. Maybe you want to think about those for a while and rephrase your question? 
