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

[Jehanne]

I would like you, Balaco, to consider the following paragraph written by a traditional Roman Catholic priest and theologian (emphasis mine):
       

When it comes to the moral legitimacy of repressing the spread of false doctrine within the Christian commonwealth, however, we are faced with a solid block of near-unanimous and unwavering insistence, for over a thousand years, on the part of the pastors of the universal Church in communion with Peter's successor. We are talking about a doctrine which Pope Leo XIII declared personally in the encyclical Immortale Dei to be "the necessary growth of the teachings of the Gospel." 6 In regard to the contrary doctrine (i.e., that government repression of anti-Catholic doctrine for the sake of the common good is intrinsically evil and unjust), Pius IX declared that this "evil opinion" must be "absolutely held as reprobated, denounced and condemned by all the children of the Catholic Church." 7 We are looking at a doctrine to which the Bishops of the Catholic world gave their absolute and zealous support, endorsing its enforcement by the civil arm, with varying degrees of severity, for century after century; a doctrine with the gravest practical implications for the lives of millions of people, both Catholic and non-Catholic; a doctrine which formed one of the pillars of that whole world-view and civilization known historically as Catholic Christendom; a doctrine which the learned and holy Pontiff Pius XII endorsed as recently as 1953, when his Concordat with the Spanish government prohibited all exterior manifestations of non-Catholic religions in that nation. If the Church had really taught at Vatican II (as is claimed by my critic Anthony Lo Bello 8) that all this was "intrinsically wrong" - an absolute, per se violation of a natural human right - then I say that the Church would have utterly destroyed her claim to be the divinely-appointed interpreter of the moral law, guarded from error in her definitive teaching by the Holy Spirit in every age of history. Roma locuta est, cause finita est would in that event have become nothing more than a hollow boast, a cynical joke, an untenable superstition. How could any intelligent person ever trust a supposed oracle of truth which contradicted itself so calamitously and ignominiously as this?

http://www.rtforum.org/lt/lt57.html

Note the last two lines.

Now, if you have a Roman Catholic priest and theologian, who is highly educated, acknowledging the fact that the Catholic Church's Magisterium has contradicted itself, how can you possibly continue to believe that any of it is true?  Especially, with Francis now allowing unrepentant, public adulterers to receive the Holy Eucharist, the so-called Blessed Sacrament, the "Sacrament of Sacraments"?

The so-called "genetic fallacy" applies in multiple instances here.  Muslims, even educated ones, are not converting en mass to Christianity, and nor vice-a-versa.  Therefore, the arguments of so-called Christian apologists are not convincing.  However, even the Iranian Academy of Sciences accepts Darwinian evolution:

http://www.interacademies.net/10878/13901.aspx

What does that tell you?