It goes beyond being 95% Muslim. Turkey is still a third world country and membership in the EU would open the floodgates into Europe of Turkish labor. Under the Maastricht Treaty and other EU treaties, there is the free flow of labor within the EU.
I’m just relaying what I talked about - it was interesting hearing his perspective - I was also held up at customs for 6 hrs. because I was carrying vitamins w/ me and they wouldn’t speak English to me or acknowledge my presence as a female... I would never want to live there!