It is not all about money. I am in the medical field. I have transported women where they have had to have an abortion to save their life because if the fetus, zygote, blastocyst wasn't aborted it would have killed her. This is before any viability.
Here are some examples, intrauterine infection, placental abruption or placental previa, previable pre-labor rupture of membranes which is also called PROM for short, cases of preeclampsia that are severe and antepartum sepsis. There are also ectopic pregnancies, which aren't technically abortions, but the pregnancy is ended.
These things don't have to just promiscuous people, they happen to all walks of life, including married Christian women.