[Gil]

My father, like myself, wasn't catholic and his view was that religion was the "cement" that kept society together thru hardship and gave them a sense of community and nothing else (at least for him).
Speaking as a non-believer, I do think that christianity is so deeply entwined with european culture that it's impossible to separate one from the other (regardless of the fact that there are Catholics, Lutherans, etc).
I think one of the more problematic issues is the emergence of "cults" that proclaim themselves christians. Cults are, generally speaking, pro-multiculturalism and more than that, they oppose concepts like community and nationality instead adopting a globalising standpoint (a good example is that american merga-corporation Jehova's Witnesses).
Also, the problematic of "vanishing" belief goes hand to hand with the permissive trend of modern government: people don't want to follow rules, they want the rules to bend and fit their own "morals" (or lack of it).
I do nonetheless believe that respect for other religions is important provided that it's mutual and non-exclusive: I cannot respect a religion that is amoral or immoral and I can only respect the religions that fit within the profile of my nation.