You and your friends like to have a good time, and that occassionally means that you like to use recreational drugs. Usually, they're medications that you or friends had from previous surgeries or from medical conditions, like benzodiazepines or opioid pain relievers. You never thought it was going to be a big deal.
Having a child who has special needs means that parents always have to think ahead about what might happen in the future. Before the child's 18th birthday, the parents make all the decisions for them, but once they reach that life milestone, they are suddenly responsible for their own decisions.