There is no magic in the world, in the shed, or anywhere in the less interesting parts of the universe. This universe is governed by natural laws which can, if we try hard enough and have a big enough shed, be found out.
There are no magic potions, no magic pills, no magic causes or cures for disease. Only Science cures by first understanding the natural causes of disease.
There are no magic foods, no magic water, no magic stones, no magic crystals, no magic shapes, no magic numbers, no magic places, no magic plants or animals.
We are not magic. There is no brain-magic, mind-reading, or fortune-telling. There is no magic essence lurking deep within us, and we do not live forever.
Magic is not needed to explain consciousness, intelligence, or emotions. Science explains these things perfectly well and with immeasurably greater predictive power and elegance.
There are no magic words. Except for "Abracadabra" and "A-La-Peanut Butter Sandwiches!" Obviously. Words mean only what the hearer believes they mean, and they have no effect on the actual universe other than slightly raising its entropy.
Existence is not magic. So far, the existence of everything known to be in existence either has a natural explanation or is at least susceptible to ongoing scientific investigation. The existence of Life too does not require or even suggest a supernatural magical explanation, and is perfectly accounted for by entirely natural causes and processes.
There is no magical guy in the sky. We know there is not, because the various man-made legends of various forms of magic sky-guy are each internally inconsistent and therefore mathematically impossible. We also know this empirically because no evidence has ever been put forward which bears no other explanation than the improbable existence of a magical man in the clouds. Stated another way, every piece of evidence ever collected is either directly against the existence of Sky-Man, or bears other, far more likely natural explanations.
The idea of secret invisible magic people can also be tested and found to fail every single time. We have no more reason to suspect the existence of an invisible magic man purposefully concealing himself from us than we have to suspect that leprechauns are secretly flapping their ears whenever no one is looking.
To believe in magic in any form is to reject reason, to deny reality, and to love comfort and lies more than truth. But what is truth? Do you really have to ask? Do you not understand that truth is that which can be shown to be indistinguishable from Reality? That which can be objectively observed, measured and described? Truth is only complicated if you're trying to wrest it and contort it into being associated with something that is unreasonable.
So what do I believe? I do not believe. Instead, I accept that for which there is adequate evidence. When one does so, there is no need for belief. And there is no need for the lie known as magic.
Happiness, healing, joy and purpose exist without the aid of any form of magic. Morality exists without magic, more so than with magic, which in many forms attempts to supersede and pervert morality. Meaning and goodness exist without any help from magic, which owing to its being devoid of any truth, more often causes suffering than prevents it.
Do, tell me why I need magic in my life. Chances are I can make (and have made) your argument better. Certainly I have considered it and found sufficient reason and evidence to dismiss any argument in favour of the nonexistent value of the nonexistent. But if you wish me to consider the nonexistent, then all I ask is evidence.