> They are against abortion, but at the same time against sex ed or contraception.
I assume you believe either contraception or abortion are moral (or both, I suppose)? I think that if you look at it from their point of view for a moment it makes more sense, setting aside biases. Abortion is believed to be wrong because it's the unjust killing of an innocent human being. Contraception is wrong because it frustrates our natural sexual faculties which are ordered towards the marital act (procreation). These don't appear to be contradictory stances. If abortion and contraception are both immoral then you'd logically have to be against both. You appear to be looking at it from a utilitarian point of view, not assessing the actual moral claims. If something is immoral you should oppose it even if some bad consequences may occur.
Similarly, I'd say that the Catholic Church isn't opposed to "sex ed" unless "sex ed" means "educating people how to sin". If you believe that contraception is immoral its perfectly logical to oppose teaching people how to sin with it, same way anyone would oppose classes teaching kids how to lie to their parents well.
> They are setting people up for failure
I'd like your input on this since it is probably the main issue I can sense: is a hard moral standard "setting someone up for failure" inherently? Back to the subject of lying I used as an illustration earlier, I'd say it's very hard to go through life without saying occasional lies but I'd never say it's setting people up for failure by telling them to not lie.
What are your thoughts? Do you think your main concern is with standards not making sense or is the issue rather that you simply don't agree with one or more of the standards themselves? I'm interested to hear your response!