@Bonnibel u r right it's beneficial means gain knowledge I can't deny but I shall explain how it's some sense , non sense or sense !!
I didn't say it's good or bad to have one , i want to share this thought that , it's a idea or fear given by my surrounding, and it's not a birth gift,that I born with it. I adopt with like and dislikes. Nothing is good nothing is bad for me all are pure situation for a perticular moment all I should be aware and Conscious about it to deal b stv at I can , and I gain knowledge once it's past, it's dealt situation, do not make sense to deal a dealt part .