Hello Jameen,
My point was that, Onan died because he spilled his seed out on the ground. It wasn't saying that everyone who uses birth control or contraceptives will be killed by God. I'm saying that anything that people do to interfere with the natural process of child bearing, whether birth control pills, contraceptives, or abortion, is sin.
I don't believe that to be the truth. The only reason that we are able to use birth control, contraceptives and perform abortions, is because of science and technology. Just because science has created the ability to do those things, does not mean that it is approved by God. Therefore, using contraceptives, pills or abortion because of financial reasons is still a sin. I don't believe that God approves of these.