Ionesco, first, please don't think I'm being harsh with you ... I'm just that way with everybody
Second, you'll be amazed by the things with which various members of this forum will be familiar.
Now, on to your most reasonable question ... from my point of view only, of course; there certainly are other points of view, some of which may be not entirely invalid
I'm not necessarily saying "Christianity doesn't make sense", nor that "Religion doesn't make sense". My observation is that I am unaware, despite assiduous research, to find that either make sense, however. Should such valid argument exist, I've not encountered it. I grant the validity of much of Christianity's moral teaching ... for instance, I think there's definite value in discouraging things like murder, theft, and dishonesty, and so forth. That's fine ... no quarrel here. My primary objection stems from the fact that Christianity is entirely self referencing and self-validating. No independent, verifiable, unambiguous support exists for it. A thing or condition which cannot be validated other than internally is immediately suspect, particularly in the face of abundent independent indications of invalidity. Now, longshots win from time to time, but you can't make a living betting on them ... you have to go with the odds in the long run. There is a terrible inevitability to probability, and probability just does not favor the paranormal or metaphysical. I'd bet against 'em.