I think there are probably 15-year-olds in existence who can be very responsible parents, just like there are 15-year-olds who can be responsible babysitters or students or employees. But in the case of parenting, they're definitely usually at a disadvantage just because they're not as emotionally mature, intellectually developed or financially secure as they will be later on. I've seen kids make very irresponsible decisions that result in their becoming pregnant and having a baby before they're ready who then become very responsible parents after the child is born.

It's been my experience that the most highly responsible 15-year-olds of all are usually wise enough to either postpone sexual activity till later or take the necessary steps to prevent accidental pregnancy in the first place.