My parents were minding DS who is 4 years old today, when I collected him they told me DS was helping them light candles. They were allowing DS to use a fire clicker thing to produce a flame to then light the candle. DS thought this was really fun but it's made me angry. I'm annoyed they are allowing him to not only handle something that can produce a flame but also to think playing with fire is fun. I'm going to have a talk with them tomorrow but want other people's opinions on this?