I'm thinking of leaving my parents because I don't agree with their views
What views do you not agree with?
It's about their traditional background, I'm more open minded.
Understanding your own views and values is part of growing up. It's a bummer that your parents are not openminded, but I think it is commendable that you want to do your own thing and be open minded.
What if they don't understand why I'm leaving?
These types of life decisions can be really challenging. But, if you and your parents have completely different views on things that are important to you, they likely won't understand your view. That doesn't mean they won't respect you for making your own choices.