We humans are born to be Omnivorous (we eat both meat and vege). Which means god created us to be omnivorous, thus we are licensed to kill (practically by god).

It does not make sense to say that killing is a sin. If killing is really a sin, then all carnivorous being on earth are sinful.

It also summarizes that all vegetarians are against what nature intends to be. We are created (by god) to eat both meat and vege. Why are some so stubborn to take only vege and come up with a theory that taking meat is a sin? IMHO, its totally against what natures intend to be.

Same goes with sex, does god really created us to be abstinence before marriage? We are born to seed while we are able to. If sex is really prohibited before marriage, what about those that do not have spouse? They are too fated not to breed?

Lots of things are unexplainable in this universe. Some claimed that god created this and that, but in fact, a large portion of what we perceive today came from human...

Very true, i love your ideology. Its sad that a particular group of religious ppl just too narrow in their thinking (conservative in another word).
I agree that science and religion can indeed co exist, but science can just progress above everything human can ever imagine, this will leave religion thousands of years behind trying to catch up but failed miserably.

Science can change when society changes, religion try to suppress changes when society is changing. Society becomes more and more complicated, science progress further but religion is holding back the progression of the whole system. Sooner or later the divide between religion and science will be wider and wider until 1 day when science can proof the origin of the universe that renders religion to be a myth.