The Luck Dragon is my Homeboy.

There tends to be a notion in the educated mind that reason is the default position of the human brain. In the educated mind, faith is a useless, vestigial concept, one left over from a time when humankind was still vulnerable to the power of the natural world.
In his essays on science and magic, Malinowski provides numerous examples as to how the native Trobrianders integrate the principals of faith and practical reason seamlessly. Whether planting their crops or manufacturing and sailing their canoes, the Trobrianders have an essential, concrete grasp on what is required of them to make these endeavours successful. While at the same time, they maintain a healthy respect and reverence for the divine stresses present in their undertaking. This alone seems to answer the question of whether or not a rational outlook would make for an abandonment of the magical and supernatural.
In The Power of Myth, Joseph Campbell illustrates for us the fundamental difference between a native society and a modern society in terms that well inform the topic at hand. In it he talks about how a rational outlook is essential for us, as humans, to operate in the physical world. It is out of this necessity that myth, magic and religion are born. Magic, in this understanding, is simply the exercise of maintain a closeness to the reverences one has for the physical world. Civility, monotheism, conquest and science are products of the modern age and serve as agents to corrupt and separate human beings form the natural world. Myth, magic and ritual are simply the agents humankind use to reconnect and embrace the natural world.
The magical rites of tribal peoples, as Malinowski writes, don't preclude them from work and focused endeavour. Instead they are interwoven into each part of the native's processes and daily lives. Their faith in magical rites is not a reason to forgo the important steps that make them successful, but simply, a way to make those processes more personal and culturally significant.
Lastly, I would bring up the notion that magic and religion are perhaps more closely related than Malinowski would have us consider. He demonstrates how the Trobrianders use reason and mechanics to manufacture their ships yet still perform magic rites while doing so. In this example he states that the islanders know fully that what they are doing will have a particular outcome. If the default position for humankind is to reason and estimate sucess on that reason, why the need for the rites at all? Simply- because the natural world is beyond our ability to control. Consider then, what is the point of magic? It is used to redirect the natural world and its forces in your favor. How is this magic realized? They use it through ritual and language.
In most modern religions there involves a principle of submission. Submission to the will of a higher being or authority, a being or authority we cannot understand or hope to control. A being we are at the constant mercy of. Yet, in every major religion, we are given means to contact that being, as with prayer. We are given means to appease that being, as with rituals like communion. We are given rules for which will allow for a deeper connection to the being, as with commandments. And we are told that the observance of all these things will gain us favor with the being. The only difference between magic and religion in this sense is the immediacy to the individuals participating in it.