As mainline Protestant denominations and Roman Catholicism fail to attract as many would-be priests and ministers, MDivs will decline.
A better question would be "Why is there a priest/minister shortage?" for these denominations, and there are plenty of good answers to that question.
A better question would be "Why is there a priest/minister shortage?" for these denominations, and there are plenty of good answers to that question.
Yup. M.Divs are a requirement for (I think) most mainline denominations and the Catholic Church. It's definitely cheaper to become a pastor for a nondenominational one since there are obviously -- for better or worse -- no requirements. And it's the nondenominational churches which are, of course, "growing" (or declining slower, to be more precise) in influence for American Christianity.
One has to wonder if eventually the mainline churches will discard M.Divs as a requirement, or replace it with a church-administered training program, in the future to make that vocation more attractive to candidates. Same with the Catholic Church, but I'm not as familiar with how strict the RCC is when it comes to degree requirements. But there is already a shortage of priests, at least for most of the West, and I don't see that problem going away soon.