Just like we can convince other people to adopt Bitcoin investment, that's also how we can convince our parents, depending if your parents loves to talk about their finances with you or not. Some parents doesn't share their investment plans with their kids, but for kids that their parents freely talks about investment and the latest trend of income source and passive income, you can use such medium to talk to your parents about Bitcoin investment. Another thing is that, some parents prefers to also save for a short term period so that they can use the money for any particular that they must have already plan to embark on. So, it's usually based on those two scenarios, when you discuss almost everything with your parents and depending on how long they want to keep their money, it will be easy to tell them about Bitcoin.