Banning abortions will create more problems, such as backstreet abortions and add another element to the control of the criminal underworld.
We can be against abortion on a personal level, but the state or no one else has the right to tell another what to do with their body.
Personally, I am against it but think people should have a free choice. The same applies to prostitution, drugs and steroids, better that it's at least monitored and under control, because the people who want to do it will find a way.
However, more has to done in schools and upbringing, to create a feeling of more responsibility of personal actions.
Also, sex education should not be taught to young kids, let them be innocent kids, only when they're in their teens should they learn a bit about sex and have the concept of responsibility drummed into their heads.