Why the Church does not side with abortion and contraceptives is based on her stance for life. And isn't that the prime right of man? Besides, the contraceptive mentality is one that promotes immoral promiscuity among people, just because the normal fruit of sexual relations is being obstructed, that is, conception of new life being stifled via abortifacients such as the pills.
Well, we have to look at the clear consequences. Open your eyes: Where most people use contraceptives, divorce abound; also immorality is on the rise. Just look around, judge for yourself. In certain localities it's the gray haired or old people that increase in number.
They talk of , poverty, etc. but these are all fallacies that people put forward for their hidden agenda and vested interest. "The love of money is the root of all evils and there are some who, pursuing it, have wandered away from the faith, and so given their souls any number of fatal wounds" (1 Tim. 6:10). Let's not forget that annihilating life is among the four sins crying to heaven for vengeance.