O argumento islamofóbico a favor da imigração

The Islamophobic Case for Open Borders, por Nathan Smith (via Bryan Caplan):

If Islamophobia is taken literally to mean “fear of Islam,” I do fear Islam in the sense that I regard it as a source of error at best and a source of terror at worst. I believe the Islamic religion to be false, in key theological doctrines, in the general tenor of its ethical teachings, in its view of history, and in its view of how society ought to be organized. (...)

Since I believe Islam to be false, I would be a poor lover of my fellow men if I did not wish for it to disappear, that is, if I desired that millions of people remain forever imprisoned in a web of errors. (...)

Perhaps the fairest definition of an Islamophobia (fair in the sense that it makes the word something other than a mere term of abuse) is someone who thinks Islam is a net negative influence on human history, and is harmful to its adherents. (...) At any rate, if Islamophobes desire that there should be less Islam in the world, my argument that open borders will bring that about, is a reason for them to support it. (...)

In making predictions about open borders and religion, my chief basis for extrapolating is the principle of ASSIMILATION. While the speed of assimilation is debatable, it’s well-known that immigrants begin to learn about their adopted country as soon as they arrive, some faster than others, that children born in a country of foreign parents exhibit a mix of their parents’ culture and that of their new homeland, and that second- or third-generation immigrants come to resemble the fellow residents of their adopted country so much that for many purposes, they are indistinguishable. (...) We may expect a third-generation Mexican-American, say, to speak English and like American popular music, yet still to be a Catholic. (...)

Yet there’s actually a lot of religious switching, too, and it cumulatively dilutes away the religious distinctiveness of immigration-originated populations. (...)

In America, 77% of those raised Muslim, are still Muslim, according to Pew. That’s a fairly high retention rate, but Islam in the West still loses about one-fourth of each Muslim-born generation. At that rate of member loss, less than half of the descendants of Muslims would still be Muslim after three generations. Germany’s assimilation of Turkish migrants seems to illustrate how this process plays out. Less than 2% of the German population self-identifies as Muslim. Almost twice as many people in Germany are of Turkish descent, and there are also substantial numbers of Arabs. Since Turkey’s population is almost exclusively Muslim, it seems that Islam must have lost roughly half of the natural increase of its emigrants in Germany to apostasy. Germany is a relevant case study because its great Turkish immigration mostly occurred around half a century ago, so it’s had time for assimilation to play out across a couple of generations.

What about conversion the other way? (...)

Historically, Islam has never made major advances by migration, or by conversion from below, as Christianity has often done. Stagnation or decline has been its fate where it was politically subordinate. Islam spread by conquest, not missionary work. It is still strongest in the historic heartland where it was established by Arab conquerors in the 7th and 8th centuries. That’s not to say that the Middle East and North Africa became Muslim through forced conversions. Forced conversions to Islam were not the norm. Rather, first Arab, and later Turkish, conquerors, became the power elite, permitting Christianity, Judaism, and sometimes other religions, such as Hinduism in India, to persist among the subject populations. But non-Muslims enjoyed various disadvantages, such as paying a special tax called the jizya, could not proselytize, sometimes suffered political violence, sometimes had their children kidnapped to become janissaries, and in general, enjoyed few or no rights and comprehensively inferior treatment. In the very long run, this made it hard for Christian and other minority communities to flourish. Their vitality atrophied, and a slow trickle of conversions to Islam depleted their numbers. So Islam spread through conquest followed by a gradual, top-down conversion of subject peoples to the dominant faith. The exceptions to this rule, such as the seemingly peaceful conversion of Indonesia to (majority) Islam, tended to occur in relatively easy mission fields, where no higher religions had a strong presence.

There are, as far as I know, no historical examples of substantial Christian populations converting to Islam except under Muslim rule. I suspect that one reason why is Islam’s attitude to women. Islam is notoriously anti-feminist, confining women to the veil and the home, and thus preventing them from playing the crucial role as volunteers and community organizers that they play in Christian parishes. (...) Anyway, for whatever reason, Islam has never been competitive in a free religious marketplace, and I don’t think it ever will be.

Under open borders, I would expect most of the population of the Muslim world to emigrate to non-Muslim countries over the course of a few decades or perhaps a century. Since Muslims comprise less than one-fourth of the world population, though, migration alone would be very unlikely to lead to a Muslim majority in Western countries. Instead, open borders would lead to a world in which most Muslims live as immigrant minorities in countries where Christianity and/or the Enlightenment were historically the dominant religious influences. That’s a big change from the contemporary world, where Muslims constitute the majority in most of the countries where they live. And while my bits of data and my quick retrospective glance at history hardly constitute ironclad evidence, they point to a scenario in which Islam’s new status as a minority religion in most of the countries where it’s present will lead to a slow but steady dissolution of its membership and influence.