Having a mental health issue does not mean that you cannot have children, what it means is that you need to work on yourself enough to make sure you are stable so that you are not inflicting misery on your children. It's a major life decision that all factors need to be considered. Your Mom and step dad have put it too bluntly for a reason. That being said, raising children is hard work and takes it toll physically and emotionally and you have to be able to cope with all of it.