Atheists, tell me, a Roman Catholic: why should I become an atheist?

[Minimalist]

There are many natural explanations that can account for reports of miracles.

Yes, for example:

"In the months during which Vespasian was waiting at Alexandria for the periodical return of the summer gales and settled weather at sea, many wonders occurred which seemed to point him out as the object of the favour of heaven and of the partiality of the Gods. One of the common people of Alexandria, well known for his blindness, threw himself at the Emperor's knees, and implored him with groans to heal his infirmity. This he did by the advice of the God Serapis, whom this nation, devoted as it is to many superstitions, worships more than any other divinity. He begged Vespasian that he would deign to moisten his cheeks and eye-balls with his spittle. Another with a diseased hand, at the counsel of the same God, prayed that the limb might feet the print of a Caesar's foot. At first Vespasian ridiculed and repulsed them. They persisted; and he, though on the one hand he feared the scandal of a fruitless attempt, yet, on the other, was induced by the entreaties of the men and by the language of his flatterers to hope for success. At last he ordered that the opinion of physicians should be taken, as to whether such blindness and infirmity were within the reach of human skill. They discussed the matter from different points of view. 'In the one case,' they said, 'the faculty of sight was not wholly destroyed, and might return, if the obstacies were removed; in the other case, the limb, which had fallen into a diseased condition, might be restored, if a healing influence were applied; such, perhaps, might be the pleasure of the Gods, and the Emperor might be chosen to be the minister of the divine will; at any rate, all the glory of a successful remedy would be Caesar's, while the ridicule of failure would fall on the sufferers.' And so Vespasian, supposing that all things were possible to his good fortune, and that nothing was any longer past belief, with a joyful countenance, amid the intense expectation of the multitude of bystanders, accomplished what was required. The hand was instantly restored to its use, and the light of day again shone upon the blind. Persons actually present attest both facts, even now when nothing is to be gained by falsehood." (The Histories, 4:81)

This excerpt from P. Cornelius Tacitus actually attributes miracles to the Emperor Vespasian which even the (most probably) interpolated so-called reference to Christus does not do.

Do you really think that Vespasian cured blindness?