Does A Woman have to be careless in her sex life because she is having an abortion?

So yesterday I did the television show we do every last Wednesday of the month The "A" Word. It's just so crazy to me how people automatically think because a woman has an abortion that she is promiscuous or doesn't use condoms or birth control. So we had a caller that asked do we think it is okay to use abortion as a form of birth control and I responded that abortion is a form of birth control and that is up to the woman if she feels that's the best option for her. So someone else called in and said that we are giving young women the wrong idea and if there using abortion as a form of birth control, that she has to be having unprotected sex with multiple people that would subject her to std's and sti's. It just baffles me that even though all the forms of birth control state that there not 100 percent effective and we all know the only way to not get pregnant or contract any sexual disease is not having sex, people automatically assume women are careless in their sex life. I felt like I was talking to the man at a protest that told me women are too stupid to keep their legs closed, that's why they have to resort to abortion. People need to realize abortion is an option that is available for a reason and that is because it is a service that is needed regardless the reason why.