It would be a mistake to consider Islam as Catholic lite, with similar views on abortion et al.
There is no specific ban on abortion in Islam. There is no reason to think that rise of Islam will lead to a decline in abortion thinking. To the extent that women are not allowed the freedom, then they may well be sequestered, barefoot, hijabed and pregnant scenarios that are hardly a solution to the evil of abortion. Teh question of abortion will merely be made by the men instead of women. Similarly, thinking on homosexuality in Islam has traditionally followed a more pagan line of thought, with the world being divided into those who penetrate and those being penetrated, with all the dominance themes that such thinking implies. The equality of all humanity in Christ, that has led to the idea that women are not submissives in the relationships as are all other “penetratees”, has only come into Islam through Victorian influences of the last century, and that is being lost more and more as Moslems reject all things western more and more.
As westerners living in the lands influenced by Christendom, we have more in common with atheists living in a post-Christian world than we ever will with Moslems coming from a worldview that rejects the humanism and western values that have arisen specifically from Christ’s influence in our world.
Vast Christian populations with far greater faith than Europe have come under Islamic dominance with Christianity and Christian values being displaced from those areas.
There is no just silver lining with the rise of Islam in Europe, when it comes to Christian values. Islam is much further from the values that Christ left the world than atheists currently are.
And generations which do not procreate, go into negative procreation even, is very much a last generation. There is a demographic crisis coming to Europe, and all the pieces are in place for an Arabization of the culture.
There is no real arguing with the numbers actually . A whole generations has been halved, with immigrants for the House of Islam filling in the gaps.