Interestingly, for all the problems I have with Christian doctrine and theology, these items always bothered me the least. Or truthfully didn't bother me at all. Why couldn't there have been a virgin birth?(either unique, or part of a larger system including other religious events worldwide?) WHY couldn't there be either bodily resurrection or the emergence of a "spiritual body" (as mentioned in the New Testament, I think by Paul) Either in a unique way or part of a larger system (the bible does report other resurrection events)
No, the miraculous items are firmly okay and untroubling to me. What they mean or imply is where trouble starts happening.