Are you sure you don't just have a bad way of listening?Ronin Wolf-master said:you have a bad way of showing it.
Earnestly, now. Maybe your parents trust you and all, but ya know? Unless they are trained in sword arts or other weapons, could they really be that qualified to judge just how dangerous doing what you're doing really is? because I'd have to say the majority of the respondents here might not think so.
Understand that it is our duty as trained martial artists to point out safety issues to others in precisely this situation. Your lack of willingness to accept the advice lends to a poor training attitude.