Allowing easy access to abortion isn't the way to teach these teens to be more responsible IMO. Most of them do what they do because they know they don't have to face the long-term consequences of their actions. I believe we need to be more careful with how we raise our children so that we don't have to murder the innocent over pointless mistakes.
Everyone wants to do whatever they want to do. Unfortunately for us, our actions and decisions have consequences whether we like them or not. We all know contraceptives could fail even if it's rare, but we still sign up for it knowing the consequences, so we must face them instead of looking for an easy way out, which comes at the cost of destroying a potential life. Again, I've got nothing against abortions in general, but I just think the trade-off should at least be fair.