This doesn’t bode well. Here’s an interesting list of predictions from the study:
The main drivers of religious affiliation to 2043 are immigration and secularization. However, fertility matters more in the long term.
Muslims will outnumber Jews by approximately 2020
Jews, white Catholics and liberal Protestants will decline
Protestants will decline from a majority in 2003 to 40 percent by 2043; Catholics may outnumber Protestants by mid-century
The non-religious will increase their share of the white population but not of the total population
Secularization will plateau by 2043 and will reverse thereafter.
Happily, I think there are other variables at play here that will improve the odds of secular expansion–the most important of which will be technologies that raise intelligence. ::