I used to track my parents and siblings on find my iphone
Why did you decide to track your parents and siblings on your iphone?
It was for fun. I wanted to see if they actually were where they said they would be.
You should not be tracking other people with your iPhone. This behavior is an invasion of other people's privacy. If people find out what you are doing, they will be angry with you.
I guess I'm just a control freak.
If they wanted you to know where they were, they will tell you. There is no need to go this extra step, unless they said it was ok. People will think you are untrustworthy.