You shouldn't hurt or traumatize your family members.
John is married with two kids.
John wants to have fun on a family vacation.
John goes swimming at the beach with his family.
John pressures his family into bungee jumping off a bridge even though they are afraid of heights.
His kids learn to swim, and they all have a nice time.
John's family are terrified and then anxious the rest of the trip and don't trust him.