First of all, a baby's heart starts beating within 3 weeks of conception. But even so, the child's DNA is formed at the moment of conception, which means the heart begins to form. Since the majority of abortions take place about 8 weeks or more after conception, then it is homicide if that is what you truly believe.
You are right, a baby is not going to provide for itself. That is why a couple should not have sex if they cannot support a child. That is the whole purpose of marriage. If the woman is pregnant, then adoption is always available. Millions wait to adopt.