I don't want kids for the fear they could be severely disabled
Do you have any cause to be concerned about something like this?
I'm worried about my child's future
I can understand your concern, and it is a valid one for a parent, however I think it might not be too healthy to worry about it too much advance - chances are your child will be perfectly fine. You should relax and focus on making sure you can provide for your kid as well as you can materially and emotionally.
I know this since I'm from a family in poverty. They are not emotionally healthy so I'm worried about their kids.
I'm glad you are taking steps to make sure your future children are healthy. It is good to show concern for the wellbeing of any child you might have. Just because you come from poverty, doesn't mean your children will be disabled.