Fertility Drugs - the Most Selfish, UnChristian Thing to Do

Taking fertility drugs is the most selfish, unchristian thing to do. It is selfish because there are so many kids in this world that need a home so people should adopt rather than using fertility drugs to have kids. The world would be so much better if all kids had a home with loving parents. There would be less criminals in the world if kids had a good environment and loving parents that help them grow into good human beings.

I am not a Christian. Christians are against stem cell use for research. How come Christians aren't against fertility drugs and other procedures that people use to help them procreate? If Christians are against using science to help cure diseases and other things then why are they not against using science in procreating. Don't they believe procreation is God's work?